Chemistry of Life: Introduction and Biological Molecules
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Questions and Answers

What percentage of the human body is made up of water?

  • 70% (correct)
  • 80%
  • 90%
  • 97%

    • What elements account for approximately 97% of the dry weight of the human body?

  • H, O, N, P, Ca, S
  • C, H, O, N, P, Ca, S (correct)
  • C, H, O, N, P
  • C, H, O, N, P, Ca

    • What was the purpose of the Miller-Urey experiment?

  • To create life forms
  • To study the structure of DNA
  • To analyze the atmosphere of early Earth
  • To synthesize biological molecules (correct)

    • What type of compounds made up the atmosphere of the early Earth?

    <p>Small, simple compounds (D)</p> Signup and view all the answers

    What was the duration of the Miller-Urey experiment?

    <p>A week (C)</p> Signup and view all the answers

    What was the energy source used in the Miller-Urey experiment?

    <p>Electric discharge (A)</p> Signup and view all the answers

    What type of compounds were found in the resulting solution?

    <p>Water-soluble organic compounds (A)</p> Signup and view all the answers

    What is the maximum temperature at which hydrothermal vents emit solutions of metal sulfides?

    <p>400°C (D)</p> Signup and view all the answers

    What is the process by which polymers of biomolecules are formed from monomers?

    <p>Condensation (C)</p> Signup and view all the answers

    What is required for the replication of some biomolecules?

    <p>Complementarity of functional groups (C)</p> Signup and view all the answers

    What characterizes different types of biomolecules?

    <p>Their functional groups and linkages (D)</p> Signup and view all the answers

    What is the process by which polymers are broken down into monomers?

    <p>Hydrolysis (B)</p> Signup and view all the answers

    What is one of the advantages of compartmentalization in cells?

    <p>Maintain high local concentrations of reactants (B)</p> Signup and view all the answers

    What is a characteristic of prokaryotes?

    <p>Variety of shapes, including spherical and rod-like (D)</p> Signup and view all the answers

    What is a benefit of maintaining high local concentrations of reactants in cells?

    <p>Increasing the rate of chemical reactions (A)</p> Signup and view all the answers

    What is a characteristic of eukaryotes?

    <p>Presence of a nucleus (D)</p> Signup and view all the answers

    Why are prokaryotes found in a wide range of habitats?

    <p>Due to their varied and adaptable metabolisms (B)</p> Signup and view all the answers

    What is a consequence of compartmentalization in cells?

    <p>Protection from adverse environmental factors (A)</p> Signup and view all the answers

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