General Biology Trivia Quiz On Photosynthesis!

20 Questions | Total Attempts: 348

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General Biology Trivia Quiz On Photosynthesis!

What do you know about photosynthesis? Do you agree you could pass this quiz? Photosynthesis is the transfer of energy from the sun to the plant. The plant either uses it or stores it away for later. It is a means by which green plants use sunlight to create their food. Plants are the only living thing that can do this. Try taking this quiz to find out how much you understand about photosynthesis.


Questions and Answers
  • 1. 
    Which of these types of organisms produce the biosphere's food supply?
    • A. 

      Consumers

    • B. 

      Autotrophs

    • C. 

      Heterotrophs

  • 2. 
    How does carbon dioxide enter the leaf?
    • A. 

      Through the vascular system

    • B. 

      Through the chloroplasts

    • C. 

      Through the stomata

  • 3. 
    Cellular respiration and photosynthesis are similar in that both involve _____.
    • A. 

      The release of O2 into the atmosphere

    • B. 

      Redox reactions

    • C. 

      The production of sugars

  • 4. 
    The source of the oxygen produced by photosynthesis has been identified through experiments using radioactive tracers. The oxygen comes from _____.
    • A. 

      Light

    • B. 

      Water

    • C. 

      Carbon dioxide

    • D. 

      Glucose

  • 5. 
    The wavelengths of light absorbed by pigments in the granum are mainly in which range?
    • A. 

      Green, which is why plants are green

    • B. 

      Blue-violet and red-orange

    • C. 

      The range absorbed by carotenoids

  • 6. 
    Which one of the following colors is most strongly reflected by chlorophyll?
    • A. 

      Red

    • B. 

      Orange

    • C. 

      Blue

    • D. 

      Green

    • E. 

      Yellow

  • 7. 
    When chloroplast pigments absorb light, _____.
    • A. 

      They gain electrons

    • B. 

      They lose energy

    • C. 

      Their electrons become excited

    • D. 

      Their protons become exictied

  • 8. 
    The light reactions of photosynthesis generate high-energy electrons, which end up in _____. The light reactions also produce _____ and _____.
    • A. 

      ATP ... NADPH ... oxygen

    • B. 

      Oxygen ... sugar ... ATP

    • C. 

      Chlorophyll ... ATP ... NADPH

    • D. 

      NADPH ... ATP ... oxygen

  • 9. 
    During photosynthesis in chloroplasts, O2 is produced from _____ via a series of reactions associated with _____.
    • A. 

      H2O ... NADPH-producing photosystem

    • B. 

      H2O ... the water-splitting photosystem

    • C. 

      CO2 ... both the NADPH-producing photosystem

    • D. 

      CO2 ... Calvin cycle

  • 10. 
    The _____ of photosynthesis performs a task similar to that of the _____ of cellular respiration.
    • A. 

      NADP+ ... NADH

    • B. 

      Calvin cycle ... electron transport

    • C. 

      NADPH ... NADH

  • 11. 
    Both mitochondria and chloroplasts _____.
    • A. 

      Obtain electrons from water

    • B. 

      Reduce NAD+, forming NADP

    • C. 

      Are surrounded by a single membrane

    • D. 

      Use an H+ gradient to produce ATP

  • 12. 
    In photosynthesis, what is the fate of the oxygen atoms present in CO2? They end up _____
    • A. 

      In sugar molecules

    • B. 

      As molecular oxygen and in sugar molecules

    • C. 

      In sugar molecules and in water

  • 13. 
    In an experiment, a plant was given _____ containing radioactive 18O, and the radioactive oxygen atoms were used to make sugar.
    • A. 

      Water

    • B. 

      Carbon dioxide

    • C. 

      Oxygen gas

  • 14. 
    In photosynthesis, plants use carbon from _____ to make sugar and other organic molecules.
    • A. 

      Carbon dioxide

    • B. 

      The sun

    • C. 

      Water

  • 15. 
    What effect does photosynthesis have on the greenhouse effect?
    • A. 

      It reduces atmospheric carbon dioxide and thus reduces greenhouse warming.

    • B. 

      It increases atmospheric carbon dioxide and thus increases the greenhouse effect.

    • C. 

      It increases atmospheric carbon dioxide and thus reduces the greenhouse effect.

    • D. 

      It has no impact on the greenhouse effect.

    • E. 

      It reduces atmospheric carbon dioxide and thus increases greenhouse warming.

  • 16. 
    Carbon dioxide makes up about _____ of the air we breathe.
    • A. 

      0.03%

    • B. 

      0.30%

    • C. 

      3.00%

  • 17. 
    Why is NADP+ needed in photosynthesis?
    • A. 

      It helps produce ATP from the light reactions.

    • B. 

      It absorbs light energy.

    • C. 

      It forms part of the water-splitting photosystem.

    • D. 

      It is the primary electron acceptor.

    • E. 

      It forms NADPH to be used in the Calvin cycle.

  • 18. 
    The Calvin cycle is a series of reactions that _____.
    • A. 

      Produce oxygen gas

    • B. 

      Convert light energy to chemical energy

    • C. 

      Produce NADPH

    • D. 

      Assemble sugar molecules by incorporating carbon

    • E. 

      All of the above

  • 19. 
    The "photo-" part of the word "photosynthesis" refers to _____, whereas "-synthesis" refers to _____.
    • A. 

      The reactions in the stomata ... the reactions in the thylakoid

    • B. 

      He Calvin cycle ... the incorporation of carbon dioxide

    • C. 

      The light reactions that occur in the thylakoids ... the incorporation of carbon dioxide

    • D. 

      The light reactions ... reactions in the thylakoids

  • 20. 
    The photosynthetic event known as the Calvin cycle occurs in the _____.
    • A. 

      Stroma

    • B. 

      Thylakoid membrane

    • C. 

      Nucleus

    • D. 

      Stomata