Advanced Biological Science Quiz: Master The Concepts Of Biology
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Anatomy is to ________ as physiology is to ________.
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Form; structure
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Growth; form
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Structure; function
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Function; form
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Structure; form
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Take this comprehensive biological science quiz to test your knowledge of various biology topics, from cells to ecosystems. This quiz includes a range of questions on topics such as genetics, evolution, anatomy, and ecological systems. This quiz will help you assess your understanding of essential biological concepts.
These biological science quiz questions and answers are designed to challenge both beginners See moreand advanced learners. With each question, you’ll gain a deeper insight into the fundamental principles that govern life on Earth. From the structure of cells to the complexities of genetic inheritance, our quiz provides an opportunity to strengthen your grasp of biological science. So, get ready to test your knowledge, learn new facts, and enhance your understanding of biology in a fun and interactive way!
Quiz Preview
- 2.
The molecule O2 is known as
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Oxygen.
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Organic.
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Oxide.
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Oxyous.
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Oxygen and organic.
Correct Answer
A. Oxygen.Explanation
The molecule O2 is known as oxygen because O2 represents a diatomic form of oxygen. Oxygen is a chemical element that exists as a gas and is essential for respiration and combustion. It is commonly found in the Earth's atmosphere and is vital for sustaining life.Rate this question:
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- 3.
If a response increases a disturbance, the system is classified as a ________ feedback system.
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Negative
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Positive
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Polarized
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Deficit
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Neutral
Correct Answer
A. PositiveExplanation
In a positive feedback system, the response amplifies or increases the disturbance or deviation from the normal state. This type of feedback loop reinforces the direction of the change, leading to further intensification of the process. In contrast, a negative feedback system works to reduce or counteract a disturbance, maintaining stability. Positive feedback is often seen in processes like blood clotting or childbirth, where a small disturbance is enhanced until a specific outcome is achieved.Rate this question:
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- 4.
Regarding cells and the cell theory:
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Bone cells are the structural building blocks of all plants and animals.
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Neurons are the most abundant cells in the body.
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Only reproductive cells are produced by the divisions of preexisting cells.
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Cells are the smallest structural units that perform all vital functions.
Correct Answer
A. Cells are the smallest structural units that perform all vital functions.Explanation
The given answer is correct because it accurately describes one of the fundamental principles of the cell theory. According to the cell theory, cells are the basic structural and functional units of all living organisms. They are responsible for carrying out all vital functions, such as metabolism, growth, and reproduction. This statement also aligns with the information provided in the question, as it states that cells are the building blocks of all plants and animals, implying their importance in the overall structure and function of organisms.Rate this question:
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- 5.
Which organ system functions in defense against infection and disease?
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Cardiovascular
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Endocrine
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Lymphatic
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Digestive
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Nervous
Correct Answer
A. LymphaticExplanation
The lymphatic system functions in defense against infection and disease. It is responsible for the production and circulation of lymphocytes, which are white blood cells that help to fight off infections. The lymphatic system also helps to remove waste and toxins from the body, further contributing to its role in defense against disease.Rate this question:
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- 6.
Which of the following is not a cation?
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Na+
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K+
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Cl-
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Ca2+
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Mg2+
Correct Answer
A. Cl-Explanation
Cations are positively charged ions, while anions are negatively charged ions. In this question, Cl- is the correct answer because it is an anion, not a cation. Na+, K+, Ca2+, and Mg2+ are all cations as they have a positive charge.Rate this question:
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- 7.
The central principle of physiology is
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Homeostasis.
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Temperature regulation.
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Nutrition.
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Reflexes.
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Stimulation.
Correct Answer
A. Homeostasis.Explanation
The central principle of physiology is homeostasis. Homeostasis refers to the body's ability to maintain a stable internal environment despite external changes. It involves various processes such as temperature regulation, nutrient balance, and reflexes. However, homeostasis encompasses all of these processes and is the overarching principle that governs them. It ensures that the body's systems work together to maintain optimal conditions for cells to function properly.Rate this question:
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- 8.
________ is the study of life.
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Enbryology
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Cytology
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Anatomy
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Physiology
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Biology
Correct Answer
A. BiologyExplanation
Biology is the correct answer because it is the study of life. It encompasses various branches such as embryology, cytology, anatomy, and physiology, which all contribute to understanding the different aspects of life and living organisms.Rate this question:
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- 9.
Which organ system directs immediate responses to stimuli?
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Reproductive system
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Lymphoid system
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Endocrine system
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Nervous system
Correct Answer
A. Nervous systemExplanation
The nervous system is responsible for directing immediate responses to stimuli. It consists of the brain, spinal cord, and a network of nerves that transmit signals throughout the body. When a stimulus is detected, such as pain or a change in temperature, the nervous system quickly processes the information and initiates a response. This can include actions like moving away from danger or releasing hormones to regulate bodily functions. The reproductive, lymphoid, and endocrine systems do not have the same immediate response capabilities as the nervous system.Rate this question:
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- 10.
Elimination of excess water, salts and waste products are functions of the ________ system.
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Digestive
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Respiratory
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Lymphatic
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Urinary
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Endocrine
Correct Answer
A. UrinaryExplanation
The urinary system is responsible for the elimination of excess water, salts, and waste products from the body. It includes the kidneys, which filter the blood and produce urine, and the bladder, which stores and releases urine. The other systems listed, such as the digestive, respiratory, lymphatic, and endocrine systems, do not primarily function in the elimination of waste products. Therefore, the urinary system is the correct answer.Rate this question:
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- 11.
Which of the following substances would be most acidic?
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White wine, pH = 3
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Stomach secretions, pH = 1
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Lemon juice, pH = 2
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Tomato juice, pH = 4
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Urine, pH = 6
Correct Answer
A. Stomach secretions, pH = 1Explanation
Stomach secretions have the lowest pH value among the given substances, which indicates a higher concentration of hydrogen ions (H+). The lower the pH value, the higher the acidity of a substance. Therefore, stomach secretions with a pH of 1 would be the most acidic among the options provided.Rate this question:
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- 12.
If a substance has a pH that is greater than 7, it is
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A salt.
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Alkaline.
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Neutral.
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A buffer.
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Acidic.
Correct Answer
A. Alkaline.Explanation
A substance with a pH greater than 7 is considered alkaline. pH is a measure of the acidity or alkalinity of a solution, with values below 7 indicating acidity, 7 indicating neutrality, and values above 7 indicating alkalinity. Therefore, if a substance has a pH greater than 7, it means it is alkaline.Rate this question:
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- 13.
The maintenance of a constant internal environment in an organism is termed
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Negative feedback
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Positive feedback
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Homeostasis
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Integration
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Effector control
Correct Answer
A. HomeostasisExplanation
Homeostasis refers to the ability of an organism to maintain a stable internal environment despite external changes. It involves various physiological processes that regulate temperature, pH, water balance, and other factors within narrow limits. This balance is achieved through negative feedback mechanisms that detect and counteract any deviations from the set point. Positive feedback, on the other hand, amplifies the initial change and does not contribute to maintaining stability. Integration and effector control are not specific terms used to describe the maintenance of a constant internal environment.Rate this question:
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- 14.
The smallest stable units of matter are
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Protons.
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Atoms.
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Electrons.
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Molecules.
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Neutrons.
Correct Answer
A. Atoms.Explanation
Atoms are the smallest stable units of matter. They consist of protons, neutrons, and electrons. Protons and neutrons are located in the nucleus, while electrons orbit around the nucleus. Molecules, on the other hand, are made up of two or more atoms bonded together. Therefore, atoms are the correct answer as they are the fundamental building blocks of matter.Rate this question:
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- 15.
Carbohydrates, lipids, and proteins are classified as
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Salts.
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Organic molecules.
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Acids.
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Bases.
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Inorganic molecules.
Correct Answer
A. Organic molecules.Explanation
Carbohydrates, lipids, and proteins are classified as organic molecules because they all contain carbon atoms in their structure. Organic molecules are compounds that are primarily composed of carbon and hydrogen atoms, and they are essential for the functioning of living organisms. Carbohydrates provide energy, lipids serve as a source of energy and insulation, and proteins play a crucial role in various biological processes. Therefore, the classification of these molecules as organic is based on their composition and biological significance.Rate this question:
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- 16.
Protection from environmental hazards is a function of the ________ system.
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Muscular
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Integumentary
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Skeletal
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Endocrine
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Skeletal and muscular
Correct Answer
A. IntegumentaryExplanation
The integumentary system is responsible for protecting the body from environmental hazards. It includes the skin, hair, nails, and sweat glands, which act as a barrier against harmful substances, UV radiation, and pathogens. The skin also helps regulate body temperature and prevents excessive water loss. Therefore, the integumentary system is the correct answer for this question.Rate this question:
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- 17.
The center of an atom is called the ________.
Correct Answer
nucleusExplanation
The center of an atom is called the nucleus. The nucleus is a small, dense region located at the center of an atom. It contains positively charged particles called protons and neutral particles called neutrons. The nucleus is surrounded by a cloud of negatively charged particles called electrons, which orbit around it in specific energy levels. The nucleus plays a crucial role in determining the properties and behavior of an atom.Rate this question:
- 18.
An excess of hydrogen ions in the body fluids can have fatal results because this can
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Disrupt tissue functions.
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Change the shape of large complex molecules, rendering them nonfunctional.
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Block ion movements.
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All of the above.
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None of the above.
Correct Answer
A. All of the above.Explanation
An excess of hydrogen ions in the body fluids can have fatal results because it can disrupt tissue functions by interfering with the normal functioning of cells and organs. Additionally, the excess hydrogen ions can change the shape of large complex molecules, rendering them nonfunctional, which can further impair various biological processes. Moreover, the accumulation of hydrogen ions can also block ion movements, disrupting the balance of electrolytes and impairing the normal functioning of cells. Therefore, all of the given options are correct explanations for why an excess of hydrogen ions in the body fluids can have fatal results.Rate this question:
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- 19.
Which pH is closest to normal blood pH?
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PH 3
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PH 4
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PH 7
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PH 2
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PH 8
Correct Answer
A. pH 7Explanation
Normal blood pH is slightly alkaline, generally between 7.35 and 7.45. Blood pH is carefully regulated by the body, as even small deviations can affect enzyme function, oxygen transport, and overall cellular activity. While pH 7 is neutral and not quite in the normal blood range, it is the closest option. Blood pH must stay within this narrow range for proper physiological function, with levels below 7.35 considered acidic (acidosis) and above 7.45 considered too alkaline (alkalosis).Rate this question:
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- 20.
In cardiac physiology, why must blood pressure in the major arteries be maintained within normal limits?
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To prevent vessel damage from low pressures
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To prevent vessel damage and vessel collapse from high and low pressures, respectively
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To ensure that the timing and sequence of the heartbeat are constantly changing
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To prevent vessel collapse from high pressures
Correct Answer
A. To prevent vessel damage and vessel collapse from high and low pressures, respectivelyExplanation
Maintaining blood pressure within normal limits is crucial in cardiac physiology to prevent vessel damage and collapse. High pressures can cause vessel damage, leading to conditions such as atherosclerosis and aneurysms. On the other hand, low pressures can result in vessel collapse, reducing blood flow to vital organs. Therefore, regulating blood pressure helps to ensure the integrity and functionality of the cardiovascular system, preventing both vessel damage and collapse.Rate this question:
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- 21.
Which of the following is not a characteristic of life?
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Respiration
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Excretion
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Growth
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Responsiveness
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Decomposition
Correct Answer
A. DecompositionExplanation
Decomposition is not a characteristic of life because it refers to the breakdown of organic matter by bacteria and fungi after death. While decomposition is a natural process that occurs in the environment, it is not something that living organisms actively engage in as a part of their life processes. Respiration, excretion, growth, and responsiveness are all essential characteristics of living organisms, as they are involved in energy production, waste elimination, development, and the ability to react to stimuli, respectively.Rate this question:
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- 22.
Which organ system removes carbon dioxide from the bloodstream?
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Endocrine
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Lymphatic
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Cardiovascular
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Respiratory
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Digestive
Correct Answer
A. RespiratoryExplanation
The respiratory system removes carbon dioxide from the bloodstream. It consists of the lungs and airways, which facilitate the exchange of oxygen and carbon dioxide between the blood and air. When we inhale, oxygen enters the bloodstream, and when we exhale, carbon dioxide is expelled from the body. This process helps maintain the body's acid-base balance and ensures that oxygen is delivered to the cells while waste carbon dioxide is eliminated.Rate this question:
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- 23.
When body temperature rises, a center in the brain initiates physiological changes to decrease the body temperature. This is an example of
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Negative feedback.
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Positive feedback.
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Nonhomeostatic regulation.
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Diagnostic regulation.
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Fever.
Correct Answer
A. Negative feedback.Explanation
When body temperature rises, the brain initiates physiological changes to decrease the body temperature. This is an example of negative feedback because the body's response opposes the initial change, in this case, the rising temperature. Negative feedback is a regulatory mechanism that helps maintain homeostasis by counteracting any deviations from the normal range. In this case, the brain detects the increase in temperature and triggers mechanisms such as sweating or vasodilation to cool down the body and bring the temperature back to the desired set point.Rate this question:
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- 24.
A dust particle floating on a water surface illustrates
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Hydrophilic attraction.
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Static electricity.
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Heat capacity.
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Surface tension.
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Chemical tension.
Correct Answer
A. Surface tension.Explanation
A dust particle floating on a water surface illustrates surface tension. Surface tension is the force that acts on the surface of a liquid, causing it to behave like a stretched elastic sheet. This force is responsible for the formation of droplets and the ability of certain objects, like the dust particle, to float on the surface of water.Rate this question:
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- 25.
Carbohydrate molecules
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Are the body's most readily available source of energy.
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Form the regulatory molecules known as enzymes.
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Contain the genetic information found in cells.
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Are composed of C, H, O, and N atoms.
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Are the building blocks of cellular membranes.
Correct Answer
A. Are the body's most readily available source of energy.Explanation
Carbohydrate molecules are the body's most readily available source of energy. This is because carbohydrates are broken down into glucose, which can be easily used by the body for energy production. Other molecules, such as proteins and fats, can also be used for energy, but carbohydrates are the preferred source due to their quick and efficient conversion into usable energy.Rate this question:
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- 26.
AB → A + B is to decomposition as A + B → AB is to
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Synthesis.
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Replacement.
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Combustion.
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Exchange.
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Metabolism.
Correct Answer
A. Synthesis.Explanation
The given statement AB → A + B represents a decomposition reaction, where a compound AB breaks down into its individual elements A and B. Similarly, the statement A + B → AB represents a synthesis reaction, where elements A and B combine to form a compound AB. Therefore, the correct answer is synthesis.Rate this question:
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- 27.
Which of the following statements about water is not correct?
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Contains hydrogen bonds
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Has a relatively low heat capacity
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Can dissolve many substances
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Is responsible for much of the mass of the human body
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Is composed of polar molecules
Correct Answer
A. Has a relatively low heat capacityExplanation
Water has a relatively high heat capacity, meaning it can absorb and retain a large amount of heat without significantly increasing in temperature. This is due to the hydrogen bonds between water molecules, which require a lot of energy to break. This property of water is important for regulating temperature in living organisms and maintaining stable environments.Rate this question:
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- 28.
Which is the major function of the lymphoid system?
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Internal transport of nutrients, waste, and gases
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Mineral storage
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Directing immediate responses to stimuli
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Defense against infection and disease
Correct Answer
A. Defense against infection and diseaseExplanation
The major function of the lymphoid system is to defend against infection and disease. The lymphoid system includes lymph nodes, lymphatic vessels, and lymphoid organs such as the spleen and thymus. It plays a crucial role in the immune response by producing and storing white blood cells called lymphocytes, which help to identify and destroy pathogens. The lymphatic system also helps to remove waste, toxins, and other harmful substances from the body, further contributing to its defense against infection and disease.Rate this question:
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- 29.
How are the skeletal system and muscular system related or similar in function?
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The skeletal system provides mineral storage while the muscular system functions in the absorption of minerals.
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They both function in support within the human body.
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They both produce heat.
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They both function in blood formation.
Correct Answer
A. They both function in support within the human body.Explanation
The skeletal system and muscular system are related in that they both function in support within the human body. The skeletal system provides the structural framework that supports the body and protects internal organs, while the muscular system works with the skeletal system to provide movement and support. The muscles attach to the bones and help to stabilize and move them, allowing for various body movements and maintaining posture. Together, the skeletal and muscular systems work in tandem to provide support and movement for the body.Rate this question:
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- 30.
If a response decreases a disturbance, the system is classified as a ________ feedback system.
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Polarized
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Neutral
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Positive
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Negative
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Deficit
Correct Answer
A. NegativeExplanation
A negative feedback system is classified as such because it works to counteract or decrease a disturbance in the system. It does this by sensing changes in the system and initiating a response that opposes or reverses the change, ultimately bringing the system back to its original state. This type of feedback helps to maintain stability and regulate the system's behavior.Rate this question:
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- 31.
A polysaccharide that is formed in liver and muscle cells to store glucose is
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Fructose.
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Glycogen.
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Lactose.
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Sucrose.
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Cellulose.
Correct Answer
A. Glycogen.Explanation
Glycogen is a polysaccharide that is formed in liver and muscle cells to store glucose. It is the body's main way of storing glucose for later use as energy. Fructose, lactose, sucrose, and cellulose are not the correct answers because they are not specifically formed in liver and muscle cells to store glucose.Rate this question:
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- 32.
An amino acid is to a protein as ________ is to a nucleic acid.
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A neutron
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A proton
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A purine
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A nucleotide
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A protein
Correct Answer
A. A nucleotideExplanation
A nucleotide is the basic building block of a nucleic acid, just as an amino acid is the basic building block of a protein. Nucleotides are composed of a sugar molecule, a phosphate group, and a nitrogenous base (such as purine or pyrimidine), and they link together to form the backbone of DNA and RNA molecules. Similarly, amino acids link together to form the polypeptide chains that make up proteins. Therefore, the analogy between an amino acid and a protein and a nucleotide and a nucleic acid is appropriate.Rate this question:
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- 33.
Which element commonly has only a proton as its nucleus?
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Neon
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Helium
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Hydrogen
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Argon
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None of the above
Correct Answer
A. HydrogenExplanation
Hydrogen commonly has only a proton as its nucleus. It is the lightest and simplest element, consisting of just one proton and one electron. This means that hydrogen does not have any neutrons in its nucleus, unlike other elements.Rate this question:
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- 34.
Because the anatomy and physiology of the body's structures are interrelated, it is often said that "form determines ________".
Correct Answer
functionExplanation
The principle "form determines function" highlights the close relationship between the structure of an anatomical feature and its physiological role. The shape, size, and arrangement of a body part are directly related to its specific task. For example, the elongated shape of muscle cells allows them to contract and generate movement, while the intricate network of alveoli in the lungs maximizes surface area for efficient gas exchange. Understanding this connection is crucial for comprehending how the body works as an integrated system.Rate this question:
- 35.
What level of organization is the smallest living level of organization?
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Chemical level
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Organ level
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Cellular level
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Tissue level
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Organ system level
Correct Answer
A. Cellular levelExplanation
The cellular level is the smallest living level of organization. At this level, living organisms are composed of cells, which are the basic structural and functional units of life. Cells perform all the necessary functions for an organism to survive and reproduce. They can exist as individual cells, such as bacteria, or as part of a larger organism, such as the cells that make up our bodies. Cells are responsible for carrying out specific tasks and working together to maintain the overall function and health of the organism.Rate this question:
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- 36.
Directing long term changes in the activities of other organ systems is the major function of the ________ system.
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Digestive
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Lymphatic
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Cardiovascular
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Respiratory
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Endocrine
Correct Answer
A. EndocrineExplanation
The endocrine system is responsible for directing long-term changes in the activities of other organ systems. It does this by releasing hormones into the bloodstream, which then travel to target cells and organs, where they regulate various processes and functions. Unlike the other systems listed, the endocrine system does not directly participate in activities such as digestion, circulation, or respiration, but rather influences and controls these activities through hormone secretion.Rate this question:
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- 37.
Gas exchange is to the respiratory system as absorption of nutrients is to the ________ system.
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Cardiovascular
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Urinary
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Lymphatic
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Digestive
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Urinary and cardiovascular
Correct Answer
A. DigestiveExplanation
Gas exchange is a vital function of the respiratory system, where oxygen is taken in and carbon dioxide is expelled. Similarly, the absorption of nutrients is a key function of the digestive system, where nutrients from food are absorbed into the bloodstream and used by the body for energy and growth. Both processes involve the transfer of substances from one system to another, making the digestive system the correct answer.Rate this question:
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- 38.
This type of feedback exaggerates the effects of variations from normal.
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Negative
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Positive
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Neutral
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Depressing
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All of the above.
Correct Answer
A. PositiveExplanation
In physiology, positive feedback exaggerates or amplifies changes from a normal state, increasing the deviation instead of stabilizing it. An example of positive feedback is blood clotting, where each step activates more clotting factors, leading to a rapid formation of a clot. In contrast, negative feedback counteracts deviations from normal to maintain homeostasis.Rate this question:
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- 39.
In general, the nervous system does each of the following, except
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Directs very specific responses.
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Directs long-term responses to change.
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Helps to maintain homeostasis.
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Responds rapidly to change and directs very specific responses.
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Responds rapidly to change.
Correct Answer
A. Directs long-term responses to change.Explanation
The nervous system is responsible for responding rapidly to change and directing very specific responses. It helps to maintain homeostasis by regulating and coordinating bodily functions. However, it does not direct long-term responses to change. Long-term responses to change are typically regulated by other systems in the body, such as the endocrine system.Rate this question:
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- 40.
The innermost electron shell in an atom holds up to ________ electrons.
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4
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6
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1
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2
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8
Correct Answer
A. 2Explanation
The innermost electron shell in an atom holds up to 2 electrons. This is because the first shell, also known as the K shell, can accommodate a maximum of 2 electrons. The electron configuration in the first shell follows the 2-8-8 rule, where the first shell is filled with 2 electrons, the second shell can hold up to 8 electrons, and subsequent shells can also hold up to 8 electrons. Therefore, the correct answer is 2.Rate this question:
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- 41.
Ions with a + charge are called
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Positrons.
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Isotopes.
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Anions.
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Cations.
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Radicals.
Correct Answer
A. Cations.Explanation
Ions with a + charge are called cations. Cations are formed when an atom loses one or more electrons, resulting in a positive charge. This positive charge is balanced by the remaining negatively charged electrons. Cations are attracted to anions, which are ions with a negative charge, and together they form ionic compounds. Positrons are actually subatomic particles with a positive charge, isotopes are atoms of the same element with different numbers of neutrons, and radicals are atoms or molecules with unpaired electrons.Rate this question:
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- 42.
The mass number represents the number of
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Neutrons + electrons.
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Electrons in an ion.
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Protons + neutrons.
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Protons in an atom.
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Neutrons in an atom.
Correct Answer
A. Protons + neutrons.Explanation
The mass number represents the number of protons + neutrons in an atom. The mass number is the total number of protons and neutrons present in the nucleus of an atom. It does not include the number of electrons, as electrons are much smaller in mass compared to protons and neutrons and are located outside the nucleus. Therefore, the correct answer is protons + neutrons.Rate this question:
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- 43.
The most abundant high-energy compound in cells is
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Adenosine monophosphate.
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DNA.
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Adenosine diphosphate.
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Adenosine triphosphate.
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RNA.
Correct Answer
A. Adenosine triphosphate.Explanation
Adenosine triphosphate (ATP) is the most abundant high-energy compound in cells. ATP is a molecule that stores and releases energy for cellular processes. It is composed of adenosine and three phosphate groups. When one phosphate group is removed from ATP, it becomes adenosine diphosphate (ADP), and when another phosphate group is removed, it becomes adenosine monophosphate (AMP). Therefore, adenosine triphosphate is the correct answer as it is the fully charged form of ATP that contains the most energy.Rate this question:
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- 44.
Hydrophilic molecules readily associate with
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Cholesterol.
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Hydrophobic molecules.
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Both lipid molecules and hydrophobic molecules.
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Water molecules.
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Lipid molecules.
Correct Answer
A. Water molecules.Explanation
Hydrophilic molecules have an affinity for water molecules due to their polar nature. Water is a polar molecule with a positive and negative end, allowing it to form hydrogen bonds with other polar molecules. Cholesterol, being a lipid molecule, is hydrophobic and does not readily associate with water. Hydrophilic molecules, on the other hand, can dissolve and interact with water molecules, forming hydrogen bonds and creating a stable association. Therefore, the correct answer is water molecules.Rate this question:
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- 45.
What other organ are the surgeons likely to find in the hypogastric region?
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Liver
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Heart
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Small intestine
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Stomach
Correct Answer
A. Small intestineExplanation
The surgeons are likely to find the small intestine in the hypogastric region. The hypogastric region is located in the lower part of the abdomen, below the umbilical region. The small intestine is a long, coiled tube that is responsible for the digestion and absorption of nutrients from food. It is located in the abdominal cavity and extends from the stomach to the large intestine. Therefore, it is the most likely organ to be found in the hypogastric region.Rate this question:
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- 46.
The nucleus of an atom consists of
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Protons + neutrons.
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Protons + electrons.
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Neutrons.
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Electrons.
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Protons.
Correct Answer
A. Protons + neutrons.Explanation
The nucleus of an atom consists of protons and neutrons. Protons are positively charged particles, while neutrons have no charge. These particles are tightly packed together in the center of the atom, forming the nucleus. Electrons, on the other hand, are negatively charged particles that orbit around the nucleus in specific energy levels. However, they are not part of the nucleus itself. Therefore, the correct answer is protons + neutrons.Rate this question:
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- 47.
The chemical behavior of an atom is determined by
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The number of protons.
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The size of the atom.
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The outermost electron shell.
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The mass of the nucleus.
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The number of neutrons.
Correct Answer
A. The outermost electron shell.Explanation
The chemical behavior of an atom is determined by the outermost electron shell. This is because the outermost shell, also known as the valence shell, contains the electrons involved in chemical bonding. The number and arrangement of electrons in the valence shell determine how an atom will interact with other atoms, forming bonds and participating in chemical reactions. The other factors listed, such as the number of protons, size of the atom, mass of the nucleus, and number of neutrons, are important for understanding other properties of the atom, but they do not directly determine its chemical behavior.Rate this question:
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- 48.
The most important metabolic fuel molecule in the body is
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Protein.
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Vitamins.
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Sucrose.
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Caffeine.
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Glucose.
Correct Answer
A. Glucose.Explanation
Glucose is the most important metabolic fuel molecule in the body because it is the primary source of energy for cells. It is easily broken down during cellular respiration to produce ATP, which is used for various cellular processes. Glucose is obtained from the breakdown of carbohydrates in the diet, and it can also be synthesized by the liver through a process called gluconeogenesis. Other molecules mentioned, such as protein, vitamins, sucrose, and caffeine, are not primarily used as fuel molecules in the body.Rate this question:
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- 49.
Which of the following is arranged in correct order from the most COMPLEX to the SIMPLEST?
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Molecular, cellular, tissue, organ, system, organism
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Organ, organism, molecular, cellular, tissue, system
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Organism, system, organ, tissue, cellular, molecular
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Cellular, tissue, molecular, system, organ, organism
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Tissue, cellular, molecular, organ, system, organism
Correct Answer
A. Organism, system, organ, tissue, cellular, molecularExplanation
The correct answer is organism, system, organ, tissue, cellular, molecular. This is the correct order from the most complex to the simplest because an organism is made up of multiple systems, which are made up of organs, which are made up of tissues, which are made up of cells, which are made up of molecules.Rate this question:
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Nov 17, 2024Quiz Edited by
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Sep 17, 2012Quiz Created by
Seres21e