Carroll High School Biology 1

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High School Quizzes & Trivia

This quiz is made from 1st semester (chapters 1-6) study guide for the Biology 1 final examination given to the students of Carroll High School. Made from the C. R. Q. 's (Chapter Review Questions). Please note that this quiz is graded using the Carroll High School grading scale.


Questions and Answers
  • 1. 

    Which of the following statements about the image shown below is NOT an observation?

    • A.

      The insect has 3 legs on one side.

    • B.

      The insect is green, white, and black.

    • C.

      The insect has a pattern on its back.

    • D.

      The insect's pattern shows it is poisonous.

    Correct Answer
    D. The insect's pattern shows it is poisonous.
    Explanation
    This statement about the image is not an observation because it is making an inference or assumption about the insect's pattern indicating its poisonous nature. Observations are based on direct sensory information, while this statement is drawing a conclusion based on the pattern's appearance.

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  • 2. 

    The statement "the worm is 2 cm long" is a(n)

    • A.

      Quantitative observation

    • B.

      Qualitative observation

    • C.

      Hypothesis

    • D.

      Inference

    Correct Answer
    A. Quantitative observation
    Explanation
    The statement "the worm is 2 cm long" is a quantitative observation because it provides a specific measurement of the worm's length in centimeters. This type of observation involves numerical data and precise measurements, allowing for objective analysis and comparison.

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  • 3. 

    An inference is

    • A.

      A statement involving numbers.

    • B.

      The same as an observation.

    • C.

      A logical interpretation of an observation.

    • D.

      A way to avoid bias.

    Correct Answer
    C. A logical interpretation of an observation.
    Explanation
    An inference is a logical interpretation of an observation. When we make an inference, we draw a conclusion based on the information we have observed or gathered. It involves using reasoning and logical thinking to make an educated guess or interpretation about something. Inferences help us make sense of the world around us and can be based on both qualitative and quantitative data. They are an important part of critical thinking and problem-solving, allowing us to make informed decisions and predictions based on the available evidence.

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  • 4. 

    The term spontaneous generation means that

    • A.

      Living things arise from other living things.

    • B.

      Living things can arise from nonliving matter.

    • C.

      Living things evolve over time

    • D.

      A maggot is part of the life cycle of a fly.

    Correct Answer
    D. A maggot is part of the life cycle of a fly.
    Explanation
    The correct answer is "A maggot is part of the life cycle of a fly." This answer is correct because spontaneous generation refers to the outdated belief that living organisms can arise from nonliving matter. However, we now know that living things only arise from other living things through reproduction. A maggot, which is the larval stage of a fly, is a living organism that is part of the life cycle of a fly.

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  • 5. 

    Which of the following statements about a controlled experiment is true?

    • A.

      Controlled experiments cannot be performed on liveing things.

    • B.

      Only one variable is tested at a time.

    • C.

      All the variables must be kept the same.

    • D.

      Scientists always use controlled experiments.

    Correct Answer
    B. Only one variable is tested at a time.
    Explanation
    In a controlled experiment, only one variable is tested at a time. This is done to ensure that any changes or effects observed can be attributed to that specific variable, while keeping all other variables constant. By isolating and manipulating one variable, scientists can accurately determine its impact on the outcome of the experiment. This helps in establishing cause-and-effect relationships and drawing valid conclusions from the experiment.

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  • 6. 

    A scientifice theory is

    • A.

      A well-tested explanation that unifies a broad range of observations.

    • B.

      Another word for hypothesis.

    • C.

      The same as the conclusion of an experiment.

    • D.

      The first step in a controlled experiment.

    Correct Answer
    A. A well-tested explanation that unifies a broad range of observations.
    Explanation
    The correct answer is "A well-tested explanation that unifies a broad range of observations." This answer accurately describes a scientific theory as a comprehensive explanation that has been extensively tested and is supported by a wide range of observations. It distinguishes a theory from a hypothesis, which is a tentative explanation that is yet to be tested. It also differentiates a theory from the conclusion of an experiment, which is a specific result obtained from a single experiment. Lastly, it clarifies that a theory is not the first step in a controlled experiment, but rather the result of numerous experiments and observations.

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  • 7. 

    The process in which two cells from different parents unite to produce the first cell of a new organism is called

    • A.

      Homeostasis

    • B.

      Sexual Reproduction

    • C.

      Developement

    • D.

      Asexual Reproduction

    Correct Answer
    B. Sexual Reproduction
    Explanation
    Sexual reproduction is the correct answer because it involves the fusion of two cells, one from each parent, to form a new organism. This process combines genetic material from both parents, leading to genetic variation in the offspring. Homeostasis refers to the ability of an organism to maintain internal stability, while development refers to the growth and maturation of an organism. Asexual reproduction involves the production of offspring without the involvement of gametes or the fusion of cells.

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  • 8. 

    The process by which organisms keep in their internal condition relatively stable is called

    • A.

      Evolution

    • B.

      Metabolism

    • C.

      Homoestasis

    • D.

      A Genome

    Correct Answer
    C. Homoestasis
    Explanation
    Homeostasis is the correct answer because it refers to the process by which organisms maintain a stable internal environment despite changes in the external environment. It involves various physiological mechanisms that regulate temperature, pH, blood pressure, and other factors to ensure optimal functioning of the body. Homeostasis is crucial for the survival and proper functioning of all living organisms.

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  • 9. 

    One meter is equal to

    • A.

      1000 millimeters

    • B.

      1 millimeter

    • C.

      1000 kilograms

    • D.

      10 kilograms

    • E.

      1 milliliter

    Correct Answer
    A. 1000 millimeters
    Explanation
    One meter is equal to 1000 millimeters. This is a conversion factor used to convert between the two units of length. Since 1 meter is equal to 1000 millimeters, it means that if we have a measurement in meters, we can multiply it by 1000 to get the equivalent measurement in millimeters.

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  • 10. 

    A researcher investigated two groups of fruit flies for 40 days.  Population A was kept in a 0.5-L container.  Population B was kept in a 1-L container.The manipulated variable was the

    • A.

      Time in days

    • B.

      Size of the containers.

    • C.

      Number of flies.

    • D.

      Differnce in time per group.

    • E.

      Number of groups studied.

    Correct Answer
    B. Size of the containers.
    Explanation
    The manipulated variable in this experiment was the size of the containers. The researcher investigated the effect of container size on two groups of fruit flies. One group was kept in a 0.5-L container, while the other group was kept in a 1-L container. By manipulating the size of the containers, the researcher aimed to determine if container size had any impact on the fruit flies' behavior, reproduction, or any other relevant factors. The other options listed, such as time in days, number of flies, difference in time per group, and number of groups studied, are not the manipulated variable in this experiment.

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  • 11. 

    Which of the following is a inferencebased on the contents of a graph?

    • A.

      The flies in group B were healthier than those in Group A.

    • B.

      If Group B were observed for 40 more days, the size of the population will double.

    • C.

      A fly population with more available space will grow larger than a population with less space.

    • D.

      In 40 more days, the sizes of both populations would decrease at the same rate.

    • E.

      The pattern shown in the graph is true onliy for fruit flies.

    Correct Answer
    C. A fly population with more available space will grow larger than a population with less space.
    Explanation
    The correct answer suggests that the availability of space affects the growth of a fly population. This can be inferred from the information given in the graph, which may show a correlation between the size of the population and the amount of available space. If there is more space, the population is likely to grow larger, while less space may limit the population's growth. This inference is based on the assumption that flies require space to reproduce and thrive.

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  • 12. 

    Once a month, a pet owner recorded the mass of her puppy in a table. When the puppy was 3 months old, she started to feed it a “special puppy food” she saw advertised on TV.Age (months)          Mass at Start of Month (kg)          Change in Mass per Month (kg)2                                              5                                                -----3                                              8                                                +3 4                                             13                                               +5According to the table, which statement is true?

    • A.

      The puppy's mass increased at the same rate for each month shown.

    • B.

      The puppy's increase in mass during month 4 was greater than 4 kg.

    • C.

      The puppy added more mass during month2 than during month 3.

    • D.

      The puppy added more mass during month 3 during month 2.

    • E.

      No accurate statements are possible unless you know the data from the first month.

    Correct Answer
    B. The puppy's increase in mass during month 4 was greater than 4 kg.
    Explanation
    Based on the table, the puppy's mass increased by 3 kg from month 2 to month 3, and then increased by 5 kg from month 3 to month 4. Therefore, the statement "The puppy's increase in mass during month 4 was greater than 4 kg" is true.

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  • 13. 

    Once a month, a pet owner recorded the mass of her puppy in a table. When the puppy was 3 months old, she started to feed it a “ special puppy food” she saw advertised on TV. Age (months)          Mass at Start of Month (kg)                Change in Mass per Month (kg)2                                          5                                                         -----3                                          8                                                         +34                                         13                                                        +5All of the following statements about the pet owner's study are true EXCEPT

    • A.

      The owner conducted a controlled experiment.

    • B.

      The owner recorded data.

    • C.

      The owner used the metric system.

    • D.

      The owner could graph the data.

    • E.

      The owner made quantitative observations.

    Correct Answer
    A. The owner conducted a controlled experiment.
    Explanation
    The given answer is "The owner conducted a controlled experiment." This statement is not true because there is no mention of any controlled variables or experimental conditions in the given information. The owner simply recorded the mass of the puppy at different ages and observed the change in mass over time. This does not meet the criteria for a controlled experiment, where variables are manipulated and controlled to test a hypothesis.

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  • 14. 

    An attraction between different substances

    • A.

      Cohesion

    • B.

      Catalysts

    • C.

      Reactants

    • D.

      Adhesion

    • E.

      Products

    Correct Answer
    D. Adhesion
    Explanation
    Adhesion refers to the attraction between different substances. It is the ability of two different substances to stick or bond together. This phenomenon occurs due to the intermolecular forces between the molecules of the two substances. Adhesion is responsible for various natural processes, such as water sticking to the surface of a leaf or a liquid rising up in a narrow tube. It plays a crucial role in many everyday situations, such as when glue adheres to two surfaces or when water adheres to the walls of a glass.

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  • 15. 

    Lower a chemical reaction's activation energy

    • A.

      Cohesion

    • B.

      Catalysts

    • C.

      Adhesion

    • D.

      Reactants

    • E.

      Products

    Correct Answer
    D. Reactants
    Explanation
    Reactants are the substances that participate in a chemical reaction and are transformed into products. In order for a chemical reaction to occur, the reactants must overcome a certain energy barrier called activation energy. Lowering the activation energy makes it easier for the reactants to reach the necessary energy level to initiate the reaction. Therefore, the presence of reactants in a chemical reaction is essential for lowering the activation energy and facilitating the reaction.

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  • 16. 

    Which one of the following is NOT an organic molecule found in living organisms?

    • A.

      Protein

    • B.

      Nucleic Acid

    • C.

      Carbohydrate

    • D.

      Lipid

    • E.

      Sodium Chloride

    Correct Answer
    E. Sodium Chloride
    Explanation
    Sodium chloride is not an organic molecule found in living organisms. Organic molecules are characterized by the presence of carbon atoms, which sodium chloride does not contain. Proteins, nucleic acids, carbohydrates, and lipids are all examples of organic molecules that play important roles in biological processes. Sodium chloride, on the other hand, is a simple inorganic compound composed of sodium and chlorine ions and is commonly known as table salt.

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  • 17. 

    Which combination of particle and charge is correct?

    • A.

      Proton: Positively Charged

    • B.

      Electron: Positively Charged

    • C.

      Neutron: Negatively Charged

    • D.

      Proton: Negatively Charged

    • E.

      Electron: No Charge

    Correct Answer
    A. Proton: Positively Charged
    Explanation
    The given combination of particle and charge is correct because a proton is indeed positively charged. Protons are subatomic particles found in the nucleus of an atom and they carry a positive charge. On the other hand, electrons are negatively charged and neutrons have no charge. Therefore, the correct combination is Proton: Positively Charged.

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  • 18. 

    In which of the following ways do isotopes of the same element differ?

    • A.

      In numbers of protons only.

    • B.

      In numers of neutrons only.

    • C.

      In number of neutrons and mass.

    • D.

      In numbers neutrons and protons.

    • E.

      In numbers of protons and in mass.

    Correct Answer
    C. In number of neutrons and mass.
    Explanation
    Isotopes of the same element differ in the number of neutrons and mass. Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons. This difference in the number of neutrons leads to a difference in the mass of the isotopes. Therefore, the correct answer is "In number of neutrons and mass."

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  • 19. 

    Which of the following molecules is made up of gycerol and fatty acids?

    • A.

      Starches

    • B.

      Proteins

    • C.

      Sugar

    • D.

      Lipids

    • E.

      Nucleic Acids

    Correct Answer
    D. Lipids
    Explanation
    Lipids are molecules made up of glycerol and fatty acids. They are a diverse group of compounds that include fats, oils, and waxes. Starches, proteins, sugars, and nucleic acids are not composed of glycerol and fatty acids, making lipids the correct answer in this case.

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  • 20. 

    Nucleotides consist of phosphate group, a nitrogenous base and a

    • A.

      Lipid

    • B.

      Fatty Acid

    • C.

      5-Carbon Sugar

    • D.

      6-Carbon Sugar

    • E.

      Starch

    Correct Answer
    C. 5-Carbon Sugar
    Explanation
    Nucleotides consist of a phosphate group, a nitrogenous base, and a 5-Carbon Sugar. The 5-Carbon Sugar is an essential component of nucleotides, as it forms the backbone of the DNA and RNA molecules. It provides stability and structure to the nucleotide, allowing for the formation of the DNA double helix or the RNA single strand. Without the 5-Carbon Sugar, nucleotides would not be able to form the necessary bonds and interactions to carry out their functions in genetic information storage and protein synthesis.

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  • 21. 

    In chemical reaction, a reactant binds to an enzyme at a region known as the

    • A.

      Substrate

    • B.

      Catalyst

    • C.

      Product

    • D.

      Active Site

    Correct Answer
    D. Active Site
    Explanation
    In a chemical reaction, a reactant binds to an enzyme at a specific region called the active site. This is where the reaction takes place and the reactant is transformed into a product. The active site provides a suitable environment for the reactant to interact with the enzyme, allowing the reaction to occur at a faster rate. The enzyme acts as a catalyst, facilitating the reaction without being consumed in the process. Therefore, the correct answer is Active Site.

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  • 22. 

    The positively charged particle in an atom is the

    • A.

      Ion

    • B.

      Neutron

    • C.

      Proton

    • D.

      Electon

    Correct Answer
    C. Proton
    Explanation
    The positively charged particle in an atom is the proton. Protons are found in the nucleus of an atom and carry a positive charge. They are equal in number to the number of electrons in a neutral atom, determining the atomic number and the identity of the element. Neutrons are neutral particles, electrons are negatively charged particles, and ions are atoms or molecules with a net electric charge.

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  • 23. 

    A covalent bond is formed by the

    • A.

      Transfer of electrons.

    • B.

      Gaining of electrons.

    • C.

      Sharing of electrons.

    • D.

      Losing of electrons.

    Correct Answer
    C. Sharing of electrons.
    Explanation
    A covalent bond is formed when two atoms share electrons. In this type of bond, both atoms contribute one or more electrons to form a shared electron pair. This sharing allows both atoms to achieve a more stable electron configuration, similar to the noble gases. The other options, such as transfer, gaining, or losing of electrons, are characteristic of ionic bonds, where electrons are completely transferred from one atom to another.

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  • 24. 

    When you shake sugar and sand together in a test tube, you cause them to form a

    • A.

      Solution

    • B.

      Mixture

    • C.

      Compound

    • D.

      Suspension

    Correct Answer
    B. Mixture
    Explanation
    When you shake sugar and sand together in a test tube, they do not chemically react with each other to form a compound. Instead, they remain as separate substances but are physically mixed together. Therefore, the correct answer is a mixture.

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  • 25. 

    A compound that produces hydrogen ions in solution is a(n)

    • A.

      Acid

    • B.

      Salt

    • C.

      Base

    • D.

      Polymer

    Correct Answer
    A. Acid
    Explanation
    An acid is a compound that produces hydrogen ions (H+) when dissolved in water. These hydrogen ions make the solution acidic. Acids typically have a sour taste and can corrode metals. Examples of common acids include hydrochloric acid (HCl) and sulfuric acid (H2SO4).

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  • 26. 

    In polymerization, complex molecules are formed by the joining together of

    • A.

      Macromolecules

    • B.

      Polymers

    • C.

      Monomers

    • D.

      Carbohydrates

    Correct Answer
    C. Monomers
    Explanation
    Polymerization is a chemical reaction where small molecules called monomers join together to form larger molecules called polymers. Therefore, in polymerization, complex molecules are formed by the joining together of monomers. Macromolecules and polymers are already complex molecules, so they are not formed in the process of polymerization. Carbohydrates are a type of macromolecule, but they are not specifically mentioned in relation to polymerization in the question.

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  • 27. 

    An enzyme speeds up a reaction by

    • A.

      Raising the activation energy.

    • B.

      Releasing energy.

    • C.

      Lowering the activation energy.

    • D.

      Absorbing energy.

    Correct Answer
    C. Lowering the activation energy.
    Explanation
    Enzymes are biological catalysts that increase the rate of chemical reactions in living organisms. They achieve this by lowering the activation energy required for the reaction to occur. Activation energy is the energy needed to start a reaction, and by reducing this energy barrier, enzymes enable the reaction to happen more quickly. This is done by providing an alternative pathway with a lower activation energy, allowing more molecules to have sufficient energy to react. Therefore, the correct answer is lowering the activation energy.

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  • 28. 

    The enzyme catalyst speeds up the chemical reation that changed hydrogen peroxide into oxygen and water.  The amount of oxygen given off is an indication of the rate of the reaction.As the rate of oxygen production (mL/s) rises, so does the concentration of the catalase (%).What can you conclude about the relationship between enzyme concentration and reaction rate?

    • A.

      Reaction rate decreases with increasing enzyme concentraion.

    • B.

      Reaction rate increases with decreasing enzyme concentration.

    • C.

      Reaction rate increases with increasing enzyme concentration.

    • D.

      The variables are indirectly proportional.

    • E.

      The variables are not related.

    Correct Answer
    C. Reaction rate increases with increasing enzyme concentration.
    Explanation
    Based on the information provided, it can be concluded that the reaction rate increases with increasing enzyme concentration. This is because the enzyme catalyst speeds up the chemical reaction, and the amount of oxygen given off is an indication of the rate of the reaction. As the concentration of the catalase enzyme increases, more enzyme molecules are available to catalyze the reaction, leading to a faster rate of oxygen production. Therefore, there is a direct relationship between enzyme concentration and reaction rate.

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  • 29. 

    A group of individuals belonging to a single species that lives together in a defined area is termed a(n)

    • A.

      Ecosystem

    • B.

      Community

    • C.

      Population

    • D.

      Biome

    • E.

      Biosphere

    Correct Answer(s)
    C. Population
    E. Biosphere
    Explanation
    A group of individuals belonging to a single species that lives together in a defined area is called a population. This term specifically refers to a group of organisms of the same species that interact with one another and have the potential to interbreed. On the other hand, the biosphere refers to the sum of all ecosystems on Earth, including all living organisms and their interactions with the physical environment.

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  • 30. 

    Which of the following is NOT true about matter in the biosphere?

    • A.

      Matter is recycled in the biopshere.

    • B.

      Biogeochemical cycles transform and reuse molecules.

    • C.

      The total amount of matter decreases over time.

    • D.

      Water and nutrients pass between organisms and the enviroment.

    • E.

      The lack of a specific nutrient can reduce primary productivety.

    Correct Answer
    C. The total amount of matter decreases over time.
    Explanation
    The correct answer is "The total amount of matter decreases over time." This statement is not true because matter is recycled in the biosphere through biogeochemical cycles. These cycles involve the transformation and reuse of molecules, allowing water and nutrients to pass between organisms and the environment. The lack of a specific nutrient can also reduce primary productivity. However, the total amount of matter in the biosphere remains relatively constant as it is continuously recycled and reused.

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  • 31. 

    Which is a source of energy for Earth's living things?I.  Wind EnergyII.  SunlightIII. Chemical Energy

    • A.

      I. only

    • B.

      II. only

    • C.

      I. and II.

    • D.

      II. and III.

    • E.

      All 3

    Correct Answer
    D. II. and III.
    Explanation
    Sunlight and chemical energy are both sources of energy for Earth's living things. Sunlight is essential for photosynthesis, the process by which plants convert sunlight into chemical energy. This chemical energy is then passed on to other organisms through the food chain. Chemical energy is also obtained through the breakdown of organic molecules during cellular respiration, which provides energy for all living cells. Therefore, the correct answer is II. and III.

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  • 32. 

    In addition to herbivores, another type of comsumer is a(n)I.  CarnivoreII.  OmnivoreIII. Detretivore 

    • A.

      I. only

    • B.

      II. only

    • C.

      I. and II.

    • D.

      II. and III.

    • E.

      All 3

    Correct Answer
    E. All 3
    Explanation
    The correct answer is All 3. This means that all three types of consumers - carnivores, omnivores, and detritivores - are included in addition to herbivores. This suggests that herbivores are not the only type of consumer, and there are other organisms that consume different types of food sources such as meat, plants, and decaying organic matter.

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  • 33. 

    Human activities, such as burning of fossil fuels, cycle carbon through the carbon cycle.  Which other processes all participate in the carbon cycle?I.   Biological processes, such as photosynthesisII.  Geochemical processes, such as the release of gas free volcanoesIII. Mixed biogeochemicals processes, such as the formation of fossil fuels

    • A.

      I. only

    • B.

      II. only

    • C.

      I. and II. only

    • D.

      II. and III. only

    • E.

      All 3

    Correct Answer
    E. All 3
    Explanation
    The correct answer is All 3. This is because all three processes mentioned in the options - biological processes, geochemical processes, and mixed biogeochemical processes - participate in the carbon cycle. Biological processes, such as photosynthesis, involve the uptake of carbon dioxide by plants and other organisms. Geochemical processes, such as the release of gas from volcanoes, release carbon dioxide into the atmosphere. Mixed biogeochemical processes, such as the formation of fossil fuels, involve the long-term storage of carbon in the Earth's crust. Therefore, all three processes contribute to the cycling of carbon through the carbon cycle.

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  • 34. 

    The total mass of living tissue at each trohpic level can be shown in a(n)

    • A.

      Pyramid of Numbers

    • B.

      Biomass Pyramid

    • C.

      Energy Pyramid

    • D.

      Biogeochemical Cycle

    Correct Answer
    B. Biomass Pyramid
    Explanation
    A biomass pyramid is a graphical representation that shows the total mass of living tissue at each trophic level in an ecosystem. It represents the amount of biomass (organic matter) present in each level, with producers at the bottom and top-level consumers at the top. The biomass pyramid is a useful tool for understanding the flow of energy and nutrients in an ecosystem, as it demonstrates the decreasing amount of biomass as you move up the food chain. This pyramid helps to illustrate the importance of producers in supporting higher trophic levels and the overall balance of the ecosystem.

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  • 35. 

    Nutrients move through an ecosystem in

    • A.

      Water Cycles

    • B.

      Energy Pyramids

    • C.

      Biogeochemical Cycles

    • D.

      Ecological Pyramids

    Correct Answer
    C. Biogeochemical Cycles
    Explanation
    Nutrients move through an ecosystem in biogeochemical cycles. These cycles involve the movement of nutrients such as carbon, nitrogen, and phosphorus between the biotic (living) and abiotic (non-living) components of the ecosystem. These cycles include processes such as photosynthesis, respiration, decomposition, and nutrient uptake by plants. The movement of nutrients through these cycles is essential for the functioning and sustainability of ecosystems.

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  • 36. 

    In the nitrogen cycle, bacteria that live on the roots of plants and

    • A.

      Change nitrogen gas into plant proteins.

    • B.

      Denitrify nitrogen compounds.

    • C.

      Change citrogen gas into amonia.

    • D.

      Break down nitrogen compounds into nitrogen gas.

    Correct Answer
    C. Change citrogen gas into amonia.
    Explanation
    The correct answer is "Change nitrogen gas into ammonia." In the nitrogen cycle, certain bacteria called nitrogen-fixing bacteria convert nitrogen gas (N2) from the atmosphere into ammonia (NH3). This process is known as nitrogen fixation and is essential for plants to obtain nitrogen, as they cannot directly use atmospheric nitrogen. Ammonia is then further converted into other nitrogen compounds, such as nitrites and nitrates, by other bacteria in the soil. These compounds are then taken up by plants and used to synthesize proteins and other essential molecules.

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  • 37. 

    Which biogeochemical cycle does NOT involve a stage where the chemical enters atmosphere?

    • A.

      Carbon Cycle

    • B.

      Water Cycle

    • C.

      Phosphorus Cycle

    • D.

      Nitrogen Cycle

    Correct Answer
    C. Phosphorus Cycle
    Explanation
    The correct answer is Phosphorus Cycle. Unlike the other three cycles, the Phosphorus Cycle does not involve a stage where the chemical enters the atmosphere. Phosphorus is mainly found in rocks and minerals, and it is released into the environment through weathering and erosion. It then cycles through the soil, water bodies, and living organisms. However, it does not have a gaseous phase like carbon dioxide in the Carbon Cycle or nitrogen in the Nitrogen Cycle, and it does not evaporate and condense like water in the Water Cycle.

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  • 38. 

    When an ecosystem is limited by a single nutrient that either is scarce of cycles very slowly, this substance is called a(n)

    • A.

      Organic Phosphate

    • B.

      Limiting Nutrient

    • C.

      Biogeochemical Cycle

    • D.

      Nitrogen Cycle

    Correct Answer
    B. Limiting Nutrient
    Explanation
    When an ecosystem is limited by a single nutrient that either is scarce or cycles very slowly, this substance is called a limiting nutrient. Limiting nutrients are essential elements that are in short supply and can restrict the growth and productivity of organisms in an ecosystem. They play a crucial role in controlling the overall productivity and diversity of an ecosystem. The availability of limiting nutrients can influence the abundance and distribution of species within an ecosystem.

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  • 39. 

    Which of the following organisms is a decomposer?

    • A.

      Twig

    • B.

      Fox

    • C.

      Bird

    • D.

      Bacteria

    Correct Answer
    D. Bacteria
    Explanation
    Bacteria is a decomposer because it breaks down dead organic matter and recycles nutrients back into the ecosystem. Decomposers play a vital role in the food chain by breaking down dead plants and animals, releasing nutrients that can be used by other organisms. While twigs, foxes, and birds are all organisms, they do not possess the ability to decompose organic matter like bacteria does.

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  • 40. 

    Groups of different species that live together in a definate area make up a(n)

    • A.

      Ecosytem

    • B.

      Biosphere

    • C.

      Community

    • D.

      Population

    Correct Answer
    C. Community
    Explanation
    A community refers to a group of different species that live together in a definite area. It is a term used in ecology to describe the interactions and relationships between different organisms within a specific habitat. A community consists of populations of different species that coexist and interact with each other, forming complex ecological networks. This term is used to understand the dynamics and functioning of ecosystems, as well as the impacts of various factors on the interactions between species.

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  • 41. 

    Autotrophs are organisms that

    • A.

      Consume plant and animal remains and other dead matter.

    • B.

      Obtain energy by eating only plants.

    • C.

      Use energy they take in from the environment to convert inorganic molecules into complex organic molecules.

    • D.

      Reply on other organisms for their energy and food supply.

    Correct Answer
    C. Use energy they take in from the environment to convert inorganic molecules into complex organic molecules.
    Explanation
    Autotrophs are organisms that use energy they take in from the environment to convert inorganic molecules into complex organic molecules. This means that autotrophs are able to produce their own food through processes like photosynthesis or chemosynthesis, without relying on other organisms for their energy and food supply. They are self-sustaining and can convert simple inorganic substances into complex organic compounds, which are essential for their growth and survival.

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  • 42. 

    The series of steps in which a large fish eats a small fish that has eaten algae is a

    • A.

      Pyramid of Numbers

    • B.

      Food Web

    • C.

      Food Chain

    • D.

      Biomass Pyramid

    Correct Answer
    C. Food Chain
    Explanation
    A food chain is a sequence of steps in which energy is transferred from one organism to another through the consumption of food. In this scenario, the large fish is consuming the small fish, which in turn has consumed algae. This represents a linear pathway of energy flow, making it a food chain. A food web, on the other hand, is a more complex representation of interconnected food chains within an ecosystem. A pyramid of numbers and biomass pyramid are different types of ecological pyramids that represent the number of organisms or the amount of biomass at each trophic level in an ecosystem, respectively.

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  • 43. 

    The average, year-after-year conditions of temperature and recipitation within a particular region are its

    • A.

      Greenhouse Effect

    • B.

      Weather

    • C.

      Biotic Factors

    • D.

      Climate

    Correct Answer
    D. Climate
    Explanation
    Climate refers to the average, year-after-year conditions of temperature and precipitation within a particular region. It encompasses long-term patterns and trends in weather, including variations in temperature, humidity, wind patterns, and precipitation levels. Climate is influenced by factors such as latitude, altitude, proximity to bodies of water, and the presence of mountains or other geographical features. It provides a broader understanding of the typical weather conditions in a region, allowing for predictions and planning based on long-term patterns.

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  • 44. 

    The greenhouse effect causes an increase in

    • A.

      Water

    • B.

      Oxygen

    • C.

      Temperature

    • D.

      Carbon Dioxide

    Correct Answer
    C. Temperature
    Explanation
    The greenhouse effect refers to the trapping of heat in the Earth's atmosphere by certain gases, such as carbon dioxide. This trapped heat leads to an increase in temperature, which is why the correct answer is temperature. The greenhouse effect does not directly cause an increase in water or oxygen levels, although it can indirectly affect them through changes in climate patterns.

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