Biochemistry: Keystone Sample Test! Trivia Quiz

10 Questions | Total Attempts: 1095

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Biochemistry: Keystone Sample Test! Trivia Quiz

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Questions and Answers
  • 1. 
    When organisms break the bonds of organic compounds, the organisms can
    • A. 

      Use the smaller molecules to plug the gaps in the cell membrane to slow diffusion

    • B. 

      Use the energy obtained to digest molecules produced by respiration that uses oxygen

    • C. 

      Obtain energy or reassemble the resulting materials to form different compounds

    • D. 

      Excrete smaller amounts of solid waste materials during vigorous exercise

  • 2. 
    In an ecosystem, the growth and survival of 
organisms are dependent on the availability of
 energy from the Sun. This energy is available 
to organisms in the ecosystem because
    • A. 

      Producers have the ability to store energy from light in organic molecules

    • B. 

      Consumers have the ability to transfer
 chemical energy stored in bonds to plants

    • C. 

      All organisms in a food web have the ability to use light energy

    • D. 

      All organisms in a food web feed on
 autotrophs

  • 3. 
    Which part of a molecule provides energy for life
 processes?
    • A. 

      Carbon atoms

    • B. 

      Oxygen atoms

    • C. 

      Chemical bonds

    • D. 

      Inorganic nitrogen

  • 4. 
    Two proteins in the same cell perform different functions. This is because the two 
proteins are composed of
    • A. 

      Chains folded the same way and the same sequence of simple sugars

    • B. 

      Chains folded the same way and the same sequence of amino acids

    • C. 

      Chains folded differently and a different sequence of simple sugars

    • D. 

      Chains folded differently and a different sequence of amino acids

  • 5. 
    Which substance is the most direct source of the 
energy that an animal cell uses for the synthesis 
of materials?

    • A. 

      ATP  

    • B. 

      Glucose

    • C. 

      DNA

    • D. 

      Starch

  • 6. 
    A student performed an experiment to demonstrate 
that a plant needs chlorophyll for photosynthesis.
 He used plants that had green leaves
 with white areas. After exposing the plants to
 sunlight, he removed a leaf from each plant and
 processed the leaves to remove the chlorophyll.
 He then tested each leaf for the presence of 
starch. Starch was found in the area of the leaf 
that was green, and no starch was found in the
 area of the leaf that was white. He concluded
 that chlorophyll is necessary for photosynthesis. 

Which statement represents an assumption the 
student had to make in order to draw this conclusion?
    • A. 

      Starch is synthesized from the glucose produced
 in the green areas of the leaf.

    • B. 

      Starch is converted to chlorophyll in the
 green areas of the leaf.

    • C. 

      The white areas of the leaf do not have cells.

    • D. 

      The green areas of the leaf are heterotrophic.

  • 7. 
    Three days after an organism eats some meat, many of the organic molecules originally contained in the meat would be found in newly formed molecules of
    • A. 

      Glucose

    • B. 

      Protein 


    • C. 

      Starch

    • D. 

      Oxygen

  • 8. 
    The failure to regulate the pH of the blood can affect the activity of
    • A. 

      Enzymes that clot blood

    • B. 

      Red blood cells that make antibodies

    • C. 

      Chlorophyll that carries oxygen in the blood

    • D. 

      DNA that controls starch digestion in the blood

  • 9. 
    What chemical monomers combine to form proteins?
    • A. 

      Sugars

    • B. 

      Nucleic acids

    • C. 

      Amino acids

    • D. 

      Lipids

  • 10. 
    How are monomers combined to form polymers?
    • A. 

      Covalent bonds

    • B. 

      Dehydration synthesis

    • C. 

      Hydrogen bonds

    • D. 

      Ionic bonds

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