Biology: Test Your Cells Knowledge! Quiz

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  • 1/78 Questions

    Genes are segments of DNA carrying instructions for a polypeptide/ protein chain that uses triplets of nucleotide bases form the genetic library of 64 codons with synonyms.

    • True
    • False
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About This Quiz


What do you know about cells? Do you think you understand enough to pass this quiz? The cell is the fundamental structural, functional, and biological part of all known organisms. A cell is the smallest possible component of life. Cells are frequently called “the construction blocks of life. ” The analysis of cells is called cell biology. Take this quiz and test your knowledge about cells.

Biology: Test Your Cells Knowledge! Quiz - Quiz

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  • 2. 

    In the formation of a protein, the wrong or incorrect amino acid could have either a major effect or no effect depending on what the error does to the protein function.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is suggesting that the effect of a wrong or incorrect amino acid in the formation of a protein can vary. It could either have a major effect on the protein's function or no effect at all. This implies that the incorrect amino acid can potentially disrupt the protein's structure or alter its function, leading to significant consequences. Therefore, the statement is true.

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  • 3. 

    Life is probably built around the carbon atom because carbon can form millions of carbon compounds such as proteins, carbohydrates, DNA, RNA, and lipids.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Carbon is the basis of life because it has the unique ability to form strong covalent bonds with other carbon atoms and a variety of other elements. This allows carbon to form complex molecular structures, such as proteins, carbohydrates, DNA, RNA, and lipids, which are essential for life. The versatility of carbon in forming these compounds makes it an ideal element for the building blocks of life.

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  • 4. 

    The order of nucleotides in the DNA determines the order/sequence ____________.

    • Of the amino acids in protein

    • Of sugars in carbohydrates

    • Arrangement of fatty acids in the cell

    • Of sugars in cellulose

    Correct Answer
    A. Of the amino acids in protein
    Explanation
    The order of nucleotides in the DNA determines the order/sequence of the amino acids in protein. DNA carries the genetic information in the form of nucleotide sequences, and this information is transcribed into mRNA, which is then translated into proteins. The sequence of nucleotides in DNA determines the sequence of amino acids in the protein, as each three-nucleotide codon codes for a specific amino acid. Therefore, the correct answer is "of the amino acids in protein."

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  • 5. 

    Fats/ lipids, both solids and oils, contain three fatty acids bonded to glycerol

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Fats and lipids consist of three fatty acids that are bonded to a glycerol molecule. This molecular structure is known as a triglyceride. Triglycerides can exist as both solids (fats) and liquids (oils) depending on the type of fatty acids present. Therefore, the statement that fats and lipids contain three fatty acids bonded to glycerol is true.

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  • 6. 

    In osmosis, movement or diffusion of water is always from the solution with the higher concentration/ more water molecules because of more collisions. Collisions are greatest in hot rather than cold water.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Osmosis is the movement of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. This process occurs due to the collisions between water molecules and solute particles. Since collisions are greater in hot water compared to cold water, the movement or diffusion of water is more likely to occur from the solution with higher concentration (or more water molecules) to the one with lower concentration. Therefore, the statement is true.

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  • 7. 

    A positive subatomic particle would be called a/an ____________, while a negative subatomic particle would be called a/an __________, and a neutral particle would be a/an____________.

    • Electron, neutron, proton

    • Proton, electron, neutron

    • Neutron,proton, electron

    • Electron, proton, neutron.

    Correct Answer
    A. Proton, electron, neutron
    Explanation
    A positive subatomic particle is called a proton, as it carries a positive charge. A negative subatomic particle is called an electron, as it carries a negative charge. A neutral particle is called a neutron, as it carries no charge.

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  • 8. 

    The organization of life starting with simplest form would be

    • Tissues, organs, organ systems, cells

    • Organs, tissues, organ systems, cells

    • Cells, tissues, organs, organ systems

    • Cells, organs, tissues, organ systems

    Correct Answer
    A. Cells, tissues, organs, organ systems
    Explanation
    The correct answer is cells, tissues, organs, organ systems. This is because cells are the basic building blocks of life and they come together to form tissues. Tissues then combine to form organs, which perform specific functions in the body. Organ systems are a collection of organs that work together to carry out a particular function. Therefore, the organization of life starts with cells, which then form tissues, organs, and ultimately organ systems.

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  • 9. 

    Plants convert light energy to chemical energy when they make carbohydrates from carbon dioxide and water

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Plants undergo a process called photosynthesis, where they convert light energy from the sun into chemical energy. This energy is used to synthesize carbohydrates, such as glucose, from carbon dioxide and water. This process occurs in specialized structures called chloroplasts, which contain a pigment called chlorophyll that captures light energy. The carbohydrates produced serve as a source of energy for the plant's growth and development. Therefore, the statement that plants convert light energy to chemical energy when they make carbohydrates from carbon dioxide and water is true.

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  • 10. 

    Huxley, 1825-1895, stated that the scientific method is "nothing but trained or organized common sense"

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given statement is true. Huxley, a prominent scientist from the 19th century, believed that the scientific method is essentially an organized form of common sense. This implies that the scientific method is not something mysterious or esoteric, but rather a systematic and logical approach to understanding the world around us. By applying critical thinking and observation, one can use common sense to formulate hypotheses, conduct experiments, and draw conclusions based on evidence. Huxley's perspective highlights the accessibility and practicality of the scientific method.

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  • 11. 

    The most abundant/ common atoms in foodstuffs and the ones life is built around would be which of the following elements/atoms

    • Sodium (Na), Hydrogen (H), oxygen (O)

    • Carbon (C), hydrogen (H), oxygen (O)

    • Hydrogen (H), sulfur (S), nitrogen (N)

    • Calcium (Ca), sodium (Na), oxygen (O)

    • Oxygen (O), hydrogen (H), nitrogen (N)

    Correct Answer
    A. Carbon (C), hydrogen (H), oxygen (O)
    Explanation
    The most abundant/common atoms in foodstuffs and the ones life is built around are carbon (C), hydrogen (H), and oxygen (O). These elements are essential for the formation of organic molecules, such as carbohydrates, proteins, and lipids, which are the building blocks of life. Carbon provides the backbone for these molecules, while hydrogen and oxygen are crucial for their composition. Sodium (Na), sulfur (S), nitrogen (N), and calcium (Ca) are also important elements, but they are not as abundant or essential for life as carbon, hydrogen, and oxygen.

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  • 12. 

    The cellular organelle called the ________ is also called the powerhouse of the cell because it makes most of the cell's ____________.

    • Lysosome, ATP

    • Mitochondrion, ATP

    • Cytoplasm, vitamins

    • Nucleus, vitamins

    • Ribosome, minerals

    Correct Answer
    A. Mitochondrion, ATP
    Explanation
    The correct answer is mitochondrion, ATP. The mitochondrion is known as the powerhouse of the cell because it is responsible for producing most of the cell's ATP, which is the main source of energy for cellular processes.

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  • 13. 

    Cells need which type of energy from foodstuffs

    • Nuclear

    • Chemical

    • Electrical

    • Light

    • Heat

    Correct Answer
    A. Chemical
    Explanation
    Cells need chemical energy from foodstuffs in order to carry out various metabolic processes and maintain their functions. Chemical energy is derived from the breakdown of organic molecules such as carbohydrates, fats, and proteins through cellular respiration. This energy is then used to perform essential cellular activities such as synthesizing molecules, transporting substances across membranes, and powering movement. Therefore, the correct answer is chemical.

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  • 14. 

    The nucleolus is located in the________, whereas free ribosomes are found in the _________.

    • Grana, thylacoids

    • Nucleolus, thylacoids

    • Nucleus, cytoplasm

    • Cytoplasm, nucleolus

    • Grana, nucleus

    Correct Answer
    A. Nucleus, cytoplasm
    Explanation
    The nucleolus is located in the nucleus, which is the control center of the cell. It is responsible for producing ribosomes. On the other hand, free ribosomes are found in the cytoplasm, which is the fluid-filled region outside the nucleus. Free ribosomes are involved in protein synthesis and can be found throughout the cytoplasm.

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  • 15. 

    The order of the ___________ determines the shape and function of a protein.

    • Nucleotides

    • Fatty acids

    • Sugars

    • Amino acids

    Correct Answer
    A. Amino acids
    Explanation
    Amino acids are the building blocks of proteins. The order or sequence in which amino acids are arranged determines the shape and function of a protein. Each amino acid has a unique side chain that interacts with other amino acids in the sequence, leading to the formation of specific structures such as alpha helices and beta sheets. These structures ultimately determine the protein's function, such as enzyme activity or structural support. Therefore, the order of amino acids is crucial in determining the overall structure and function of a protein.

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  • 16. 

    The sharing of electrons in called_________ while bonds formed from gain or loss of electrons are called _____________

    • Ionic bonding, covalent bonding

    • Covalent bonding, ionic bonding

    • Hydrogen bonding covalent bonding

    • Covalent bonding, hydrogen bonding

    Correct Answer
    A. Covalent bonding, ionic bonding
    Explanation
    Covalent bonding refers to the sharing of electrons between atoms, while ionic bonding refers to the transfer of electrons from one atom to another, resulting in the formation of positive and negative ions. In covalent bonding, atoms share electrons in order to achieve a stable electron configuration. On the other hand, in ionic bonding, one atom loses electrons to become positively charged (cation) and another atom gains those electrons to become negatively charged (anion).

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  • 17. 

    Dietary essential amino acids for animals are not synthesized in large enough quantities (arginine) or must be synthesized by some other organism (plants usu., 8 others)

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Dietary essential amino acids, such as arginine, are not produced in sufficient quantities by animals. This means that animals must obtain these amino acids from their diet in order to meet their nutritional needs. Additionally, some essential amino acids can only be synthesized by other organisms, typically plants. Therefore, it is true that animals rely on external sources to obtain these essential amino acids.

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  • 18. 

    A population of animals grows _____________

    • Geometrically

    • Arthimetically

    • Both geometrically and arthimetically

    Correct Answer
    A. Both geometrically and arthimetically
    Explanation
    A population of animals grows both geometrically and arithmetically. Geometric growth refers to the exponential increase in population size, where each generation reproduces at a constant rate and the population size doubles over time. Arithmetical growth, on the other hand, refers to a linear increase in population size, where each generation adds a constant number of individuals. Therefore, a population can experience both types of growth simultaneously, with the number of offspring increasing exponentially and the addition of new individuals occurring linearly.

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  • 19. 

    Because water ___________water will dissolve more molecules than any other liquid.

    • Contains a nitrogen atom

    • Has a carboxyl group (acidic)

    • Has a 'R' group

    • Has an amino acid group (basic)

    • Is dipolar with weak positive and negative charges

    Correct Answer
    A. Is dipolar with weak positive and negative charges
    Explanation
    Water is dipolar with weak positive and negative charges. This means that the water molecule has a slightly positive charge on one end and a slightly negative charge on the other end. This property allows water to form hydrogen bonds with other molecules, making it an excellent solvent. The positive end of water can attract and surround negatively charged molecules, while the negative end can attract and surround positively charged molecules. This ability to dissolve a wide range of molecules makes water unique among liquids.

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  • 20. 

    Glycoproteins and other proteins of the plasma membrane could participate in which of the following 

    • Hormone receptor

    • Active transport

    • Structural support

    • Cell to cell recognition

    • All the above

    Correct Answer
    A. All the above
    Explanation
    Glycoproteins and other proteins of the plasma membrane are involved in various functions. They can act as hormone receptors, allowing cells to respond to specific signals. They also play a role in active transport, which is the movement of molecules across the membrane against their concentration gradient. Additionally, these proteins provide structural support to the cell membrane, maintaining its shape and integrity. They are also involved in cell-to-cell recognition, allowing cells to interact and communicate with each other. Therefore, the correct answer is "all the above" as these proteins participate in hormone receptor activity, active transport, structural support, and cell-to-cell recognition.

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  • 21. 

    Which of the following are true about nucleic acids like DNA?

    • Largest of biological molecules

    • Carry genetic information

    • Codes for and forms protein molecules

    • Codes for and forms the molecules of ribosomal RNA & messenger RNA

    • all are true

    Correct Answer
    A. all are true
    Explanation
    All the statements about nucleic acids like DNA are true. Nucleic acids are the largest biological molecules and they carry genetic information. They also code for and form protein molecules, as well as the molecules of ribosomal RNA and messenger RNA.

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  • 22. 

    Global warming ____________.

    • Has been occurring naturally for 20,000 years

    • Is not occurring

    • Is caused by man

    Correct Answer
    A. Has been occurring naturally for 20,000 years
    Explanation
    Global warming refers to the long-term increase in Earth's average surface temperature, primarily due to the buildup of greenhouse gases in the atmosphere. The given answer suggests that global warming has been occurring naturally for 20,000 years. This implies that the Earth's climate has been gradually warming over this extended period without any significant human influence. It suggests that the current global warming trend is part of a natural cycle rather than being caused by human activities.

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  • 23. 

    The most important part of the scientific method that is used to prove or disprove an educated guess.

    • Observation

    • Hypothesis

    • Experimentation

    • Theory

    • Law

    Correct Answer
    A. Experimentation
    Explanation
    Experimentation is the most important part of the scientific method because it allows scientists to test their hypotheses and gather evidence to support or refute them. Through experimentation, scientists can control variables, manipulate conditions, and collect data to draw conclusions about the phenomenon being studied. This process helps to ensure that the results are reliable and can be replicated by other researchers. Experimentation is essential for validating scientific theories and laws, as it provides empirical evidence to support or reject the initial educated guess or hypothesis.

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  • 24. 

    The world is facing a ________ shortage or actually a shortage of __________.

    • Vitamin, dietary essential nucleeotides

    • Protein, dietary essential amino acids

    • Lipid, dietary essential amino acids

    • Carbohydrates, dietary essential fatty acids

    • Vitamin, dietary essential nucleotides

    Correct Answer
    A. Protein, dietary essential amino acids
    Explanation
    The correct answer is "protein, dietary essential amino acids". Protein is an essential macronutrient that the body needs for growth, repair, and maintenance of tissues. Amino acids are the building blocks of proteins and are essential because the body cannot produce them on its own. Therefore, a shortage of protein or dietary essential amino acids can lead to various health issues and deficiencies.

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  • 25. 

    One of the following statements about water is TRUE

    • The solvent or liquid of life is water

    • The amount of water on earth is not decreasing

    • Water's distribution on earth changes from season to season and time to time

    • We are not running out of water

    • All of these answers is true

    Correct Answer
    A. All of these answers is true
    Explanation
    All of these answers are true because water is indeed the solvent or liquid of life, the amount of water on earth is not decreasing, water's distribution on earth does change from season to season and time to time, and we are not running out of water.

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  • 26. 

    The most serious problem facing humans today and is responsible for all the rest is 

    • Food shortages

    • Fuel shortages

    • Housing shortages

    • Disease

    • Over population

    Correct Answer
    A. Over population
    Explanation
    Overpopulation is the most serious problem facing humans today and is responsible for all the rest. When there are too many people in a given area, it puts a strain on resources such as food, fuel, and housing. This leads to shortages in these essential resources, which in turn can cause disease outbreaks and other negative consequences. Overpopulation exacerbates all other problems and challenges that humans face, making it the most significant issue we need to address.

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  • 27. 

    There are no dietary essential ___________, only nine dietary essential _________  for most animals .

    • Sugars , amino acids

    • Carbohydrates, nucleotides

    • Carbohydrates, fatty acids

    • Vitamins, fatty acids

    • Nucleotides, fatty acids

    Correct Answer
    A. Sugars , amino acids
    Explanation
    The statement mentions that there are no dietary essential "sugars" and "amino acids", but there are nine dietary essential "carbohydrates" and "fatty acids" for most animals. This means that sugars and amino acids are not considered essential nutrients in the diet, while carbohydrates and fatty acids are necessary for animals.

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  • 28. 

    Vitamins include A,B,C,D,E,K, are made by man because they are necessary for survival

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false. Vitamins are not made by man, but are naturally occurring organic compounds that are essential for the normal functioning of the body. While some vitamins can be synthesized in laboratories, they are primarily obtained through a balanced diet that includes fruits, vegetables, and other food sources.

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  • 29. 

    No nucleus, no other organelles and a double membrane like mitochondria would be

    • Plant

    • Cells

    • Animal cells

    • Fungal cells

    • Prokaryotic cells

    Correct Answer
    A. Prokaryotic cells
    Explanation
    Prokaryotic cells are the only cells that do not have a nucleus or other membrane-bound organelles. They also have a double membrane, similar to mitochondria. Plant cells, animal cells, and fungal cells all have a nucleus and other organelles, while prokaryotic cells do not. Therefore, the correct answer is prokaryotic cells.

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  • 30. 

    Motil appendages on a cell that look like hundreds of hairs are known as ___________

    • Transformers

    • Antennae

    • Flagella

    • Spindles

    • Cilia

    Correct Answer
    A. Cilia
    Explanation
    Cilia are motile appendages on a cell that resemble hundreds of hairs. They are responsible for various functions such as movement, sensing the environment, and facilitating the flow of fluids. Cilia are found in many organisms, including single-celled organisms and multicellular organisms like humans. They play a crucial role in processes like cell locomotion, the movement of substances across cell surfaces, and the coordination of tissue development.

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  • 31. 

    The golgi apparatus functions in _________.

    • Packaging molecules like glycoproteins and hydrolytic enzymes into vacuoles for export out of the cell.

    • Cell respiration

    • Packaging molecules like glycoproteins and hydrolyctic enzymes into vacuoles for import into the cell

    • Glycosis

    • Controlling protein synthesis

    Correct Answer
    A. Packaging molecules like glycoproteins and hydrolytic enzymes into vacuoles for export out of the cell.
    Explanation
    The Golgi apparatus is responsible for packaging molecules like glycoproteins and hydrolytic enzymes into vacuoles for export out of the cell. This process involves modifying and sorting these molecules before they are packaged into vesicles and transported to the cell membrane for secretion. The Golgi apparatus plays a crucial role in the secretion of proteins and other molecules from the cell.

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  • 32. 

    Plant leaves and stems are usually high in __________.

    • Protein concentrations

    • Quantity of dietary essential amino acids

    • Dietary fatty acids

    • Fiber like lignin & cellulose

    • Both a & b

    Correct Answer
    A. Fiber like lignin & cellulose
    Explanation
    Plant leaves and stems are usually high in fiber like lignin and cellulose. Fiber is a complex carbohydrate that cannot be digested by humans, but it plays a crucial role in maintaining a healthy digestive system. Lignin and cellulose are the main components of plant cell walls, providing structural support. Additionally, they contribute to the bulk of dietary fiber, aiding in proper bowel movements and preventing constipation. Therefore, the correct answer is fiber like lignin & cellulose.

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  • 33. 

    Vitamins are organic molecules that are needed in small amounts and are necessary for survival and growth, but are made by plants and NOT made by animals.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Vitamins are essential nutrients that are required in small quantities for the proper functioning and growth of the body. While animals require vitamins for their survival and growth, they are unable to synthesize these organic molecules on their own. Plants, on the other hand, are capable of producing vitamins through various biochemical processes. Therefore, the statement that vitamins are made by plants and not made by animals is true.

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  • 34. 

    The universal genetic code uses how many bases side by side in the "I" strand?

    • 3

    • 2

    • 1

    • 4

    • 5

    Correct Answer
    A. 3
    Explanation
    The universal genetic code uses 3 bases side by side in the "I" strand. This is because a codon, which consists of three bases, codes for a specific amino acid. Each codon in the "I" strand corresponds to a specific amino acid, allowing for the correct sequence of amino acids to be produced during protein synthesis.

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  • 35. 

    The building blocks of nucleic acids are nucleotidesm which consist of 

    • Pentose sugar

    • Phosphate

    • Purines and pyrimidines

    • All are part of building blocks

    Correct Answer
    A. All are part of building blocks
    Explanation
    The correct answer is "all are part of building blocks." This means that all of the mentioned components, including pentose sugar, phosphate, purines, and pyrimidines, are essential in forming nucleotides, which are the building blocks of nucleic acids. Each nucleotide consists of a pentose sugar, a phosphate group, and a nitrogenous base, which can be either a purine (adenine or guanine) or a pyrimidine (cytosine, thymine, or uracil). Therefore, all of these components are necessary for the formation of nucleic acids.

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  • 36. 

    Eukaryotes include all but _______ because eukaryotes have a nucleus

    • Plants

    • Bacteria

    • Animals

    • Fungi

    Correct Answer
    A. Bacteria
    Explanation
    Eukaryotes include all but bacteria because bacteria are prokaryotes, which means they do not have a nucleus. Eukaryotes, on the other hand, have a well-defined nucleus that houses their genetic material. Plants, animals, and fungi are all eukaryotes and have a nucleus, while bacteria do not.

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  • 37. 

    The sweetest sugar is ______, cane sugar is _________, and milk sugar is ____________.

    • Sucrose, fructose, lactose

    • Glucose, fructose, lactose

    • Fructose, sucrose, lactose

    • Sucrose, glucose, lactose

    • Sucrose, maltose, glucose

    Correct Answer
    A. Fructose, sucrose, lactose
    Explanation
    The sweetest sugar is fructose, as it is the most naturally occurring sugar and is known for its high sweetness level. Cane sugar is sucrose, which is a combination of fructose and glucose molecules. Milk sugar is lactose, which is found in milk and dairy products and is made up of glucose and galactose molecules.

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  • 38. 

    Saturated fatty acids have one, two or more double bonds (C=C) and are less dangerous to the cardiovascular system than unsaturated fatty acids, which have single bonds.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. Saturated fatty acids do not have any double bonds (C=C) and instead have single bonds. Unsaturated fatty acids, on the other hand, have one or more double bonds. It is actually the unsaturated fatty acids that are considered to be less dangerous to the cardiovascular system compared to saturated fatty acids. Unsaturated fats, such as those found in olive oil and avocados, can help lower bad cholesterol levels and reduce the risk of heart disease when consumed in moderation.

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  • 39. 

    As as economist he "opposed aiding the poor because he thought aid would only compound their misery by allowing their numbers to grow" who said this

    • Huxley

    • Pasteur

    • Malthus

    • Darwin

    • Aristotle

    Correct Answer
    A. Malthus
    Explanation
    Malthus, as an economist, believed that providing aid to the poor would only worsen their situation by allowing their population to increase. He argued that the population grows at a faster rate than the resources available, leading to poverty and misery. Malthus' theory, known as Malthusianism, suggests that population control is necessary to prevent overpopulation and its negative consequences. This viewpoint aligns with the statement given in the question.

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  • 40. 

    Carrying capacity is reached or occurs when the population growth is ________.

    • Slowing down

    • Leveling off

    • Accelerating

    • Rapidly declining

    Correct Answer
    A. Leveling off
    Explanation
    Carrying capacity refers to the maximum number of individuals that a particular environment can sustainably support. When the population growth is leveling off, it means that the population is approaching its carrying capacity and the rate of growth is slowing down. This occurs because the available resources and space in the environment become limited, leading to a decrease in the population's growth rate. Therefore, the correct answer is "leveling off."

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  • 41. 

    The most reactive atoms have their outer orbitals full of electrons like helium.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Atoms with full outer orbitals, like helium, are actually the least reactive because they have a stable electron configuration. The most reactive atoms are those that have incomplete outer orbitals and are therefore more likely to gain, lose, or share electrons to achieve a stable configuration.

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  • 42. 

    That reactions go from useable energy to non useable energy (heat) or to more random or more entorpy or things run down hill or * No free lunch law are all statements that apply to the _________ law of thermodynamics

    • First

    • Fifth

    • Fourth

    • Second

    • Third

    Correct Answer
    A. Second
    Explanation
    The statement "That reactions go from useable energy to non useable energy (heat) or to more random or more entropy or things run down hill or No free lunch law" refers to the second law of thermodynamics. This law states that in any energy transfer or transformation, the total entropy of an isolated system will always increase over time. It explains why energy tends to disperse and become less organized, resulting in the loss of useable energy and the generation of heat.

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  • 43. 

    The movement of molecules in and out of a cell by permeases/facilitated duffusion _________.

    • Moves particles from a region of lower collision to a region of higher collision

    • Moves particles from a region of higher collision to a region of lower collision

    • Requires a carrier and no expenditure of chemical energy

    • Requires a carrier and an expenditure of chemical energy(ATP)

    • Both b & c

    Correct Answer
    A. Both b & c
    Explanation
    Permeases or facilitated diffusion allows the movement of molecules in and out of a cell. It moves particles from a region of higher collision to a region of lower collision, which is indicated by option b. Additionally, this process requires a carrier but does not require an expenditure of chemical energy, as mentioned in option c. Therefore, the correct answer is both b and c.

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  • 44. 

    If the concentration of sugar/glucose is 10 times more concentrated in a cell than outside the cell, yet sugar/glucose is continuously moving into the cell against the concentration gradient. The process by which sugar/glucose moves is called __________ .

    • Nonactive transport

    • Osmosis

    • Active transport

    • Simple diffusion

    • Facilitated diffusion

    Correct Answer
    A. Active transport
    Explanation
    Active transport is the process by which substances are moved against their concentration gradient, requiring the use of energy. In this case, even though the concentration of sugar/glucose is 10 times more concentrated inside the cell, it is still moving into the cell. This suggests that active transport is occurring, as it is able to move substances from an area of lower concentration to an area of higher concentration.

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  • 45. 

    Fossil fuels are formed from _______of dead animals, plants, and prokaryotes.

    • Carbohydrates

    • Nuclelic acids

    • All foodstuffs

    • Lipids

    • Sugars in cellulose

    Correct Answer
    A. All foodstuffs
    Explanation
    Fossil fuels are formed from the remains of dead animals, plants, and prokaryotes, which are all considered foodstuffs. These foodstuffs include carbohydrates, nucleic acids, lipids, and sugars in cellulose. Over millions of years, the organic matter from these sources undergoes heat and pressure, transforming into fossil fuels such as coal, oil, and natural gas.

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  • 46. 

    As a source of protein in nutrition, among seeds  _________ would have the LOWEST QUALITY/LESS dietary essential amino acids.

    • Corn

    • Rice

    • Beans

    • Wheat

    • Soybeans and sunflower seeds

    Correct Answer
    A. Corn
    Explanation
    Corn would have the lowest quality/less dietary essential amino acids among the given options. Corn is a grain that is relatively low in protein compared to other seeds like beans, wheat, soybeans, and sunflower seeds. It lacks certain essential amino acids that are necessary for proper nutrition. Therefore, corn would be the least beneficial source of protein in terms of its amino acid content.

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  • 47. 

    The connections between two cells that allows molecules to pass between them would be  ____________, while the strongest connections would be called ___________.

    • Plasmodestmata , gap junctions

    • Gap junctions, plasmodestmata

    • Gap junctions, desmosomes

    • Tight junctionsm desomosomes

    Correct Answer
    A. Gap junctions, desmosomes
    Explanation
    Gap junctions are connections between two cells that allow molecules to pass between them. These junctions are formed by proteins called connexins, which create small channels that allow for the direct transfer of ions and small molecules. Gap junctions are important for cell communication and coordination. On the other hand, desmosomes are the strongest connections between cells. They are formed by proteins called cadherins, which anchor cells together and provide mechanical strength. Desmosomes are particularly important in tissues that experience mechanical stress, such as the skin and heart muscles.

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  • 48. 

    Transcription occurs in the __________. Translation occurs on the __________.

    • Ribosomes, nucleus

    • Mitochondria, nucleus

    • Nucleus, lysosomes

    • Nucleus, ribosomes

    • Golgi body, ribosomes

    Correct Answer
    A. Nucleus, ribosomes
    Explanation
    Transcription is the process of synthesizing RNA from DNA, and it occurs in the nucleus. Translation is the process of protein synthesis, where the RNA is used as a template to produce proteins, and it occurs on the ribosomes.

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  • 49. 

    What is the sequence of bases on the strand complementary DNA that is synthesized from the original strand 3' AACCTTCACCCT 5'

    • UGUACCUACUGU

    • TGGACCCACTGT

    • UUGGAAGUGGGA

    • TTGGAAGTGGGA

    • AUGGAAGUGGGA

    Correct Answer
    A. TTGGAAGTGGGA
    Explanation
    The sequence of bases on the complementary DNA strand is determined by pairing each base with its complementary base. In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). The original strand has the sequence 3' AACCTTCACCCT 5'. To find the complementary DNA strand, we need to pair each base with its complementary base. A pairs with T, T pairs with A, C pairs with G, and G pairs with C. Therefore, the complementary DNA strand would have the sequence 5' TTGGAAGTGGGA 3'.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
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  • May 05, 2010
    Quiz Created by
    Kleigh471

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