Biomolecules quiz
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Questions and Answers

How does winter impact carbon cycling in lakes and ponds?

  • Low sunlight leads to less photosynthesis and lower oxygen (correct)
  • Cold temperatures increase the amount of nitrogen for photosynthesis
  • There is less carbon dioxide produced in winter
  • Snow increases the amount of water and the plants' ability to photosynthesize

    • Which statement best compares how aerobic and anaerobic respiration impact atmospheric carbon dioxide levels?

  • Anaerobic respiration significantly contributes to atmospheric carbon dioxide levels, while aerobic respiration has a minimal impact.
  • Both aerobic and anaerobic respiration have a negligible impact on atmospheric carbon dioxide levels.
  • Both aerobic and anaerobic respiration significantly increase atmospheric carbon dioxide levels, with anaerobic respiration contributing slightly more.
  • Aerobic respiration significantly contributes to atmospheric carbon dioxide levels, while anaerobic respiration has a minimal impact. (correct)

    • Enzymes fit into which category of carbon-based biomolecules?

  • Lipids
  • Proteins (correct)
  • Nucleic acids
  • Carbohydrates

    • Which of the following is true of enzymes?

    <p>They have a specific function and structure</p> Signup and view all the answers

    Which of the following is also true of enzymes?

    <p>They speed up some biological reactions</p> Signup and view all the answers

    The observation of 'used' liver causing fresh hydrogen peroxide to bubble illustrates which characteristic of enzymes?

    <p>Enzymes are reusable</p> Signup and view all the answers

    What does the faster decomposition of hydrogen peroxide by liver in a lab compared to a lighted room demonstrate about enzymes?

    <p>Enzymes increase the rate of reactions</p> Signup and view all the answers

    How do bacteria contribute to the cycling of nutrients in an ecosystem?

    <p>They decompose dead organisms, releasing nutrients.</p> Signup and view all the answers

    What is a likely effect of reducing soil bacteria on a farm?

    <p>Nitrogen levels would decrease due to less availability.</p> Signup and view all the answers

    Which equation represents the correct process of photosynthesis?

    <p>6CO2 + 6H2O → C6H12O6 + 6O2</p> Signup and view all the answers

    Why are photosynthetic organisms essential in ecosystems?

    <p>They directly convert sunlight into usable energy.</p> Signup and view all the answers

    Which equation correctly illustrates cellular respiration?

    <p>C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP</p> Signup and view all the answers

    Which types of organisms utilize cellular respiration to produce energy?

    <p>Producers, consumers, and decomposers</p> Signup and view all the answers

    What statement correctly describes cellular respiration?

    <p>All organisms, including producers, perform cellular respiration.</p> Signup and view all the answers

    What is a consequence of photosynthesis for the ecosystem?

    <p>It provides energy and organic matter for other organisms.</p> Signup and view all the answers

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