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Biology 1401 Chapter 8 Photosynthesis

24 Questions
Photosynthesis Quizzes & Trivia
Questions and Answers
  • 1. 
    Carbon atoms of CO(2) are incorporated into organic molecules in a series of dark reactions called
    • A. 

      Carbon reduction.

    • B. 

      Carbon synthesis.

    • C. 

      Carbon fixation.

    • D. 

      Carbon activation.

    • E. 

      Carbon oxidation.

  • 2. 
    Most plants incorporate carbon dioxide into sugars by means of a cycle of reactions called the
    • A. 

      CAM cycle.

    • B. 

      Carbon cycle.

    • C. 

      Calvin cycle.

    • D. 

      Krebs cycle.

    • E. 

      Electron transport cycle.

  • 3. 
    Flattened sacs of internal membranes associated with photosynthesis are called
    • A. 

      Chloroplasts.

    • B. 

      Photosystems.

    • C. 

      The stroma.

    • D. 

      Thylakoids.

    • E. 

      Cristae.

  • 4. 
    In green plant photosynthesis, the electron donor for the light dependent reaction is
    • A. 

      Carbon dioxide.

    • B. 

      Oxygen.

    • C. 

      RuBP.

    • D. 

      Chlorophyll II.

    • E. 

      Water.

  • 5. 
    In the dark reactions of photosynthesis, CO(2) is added to a five-carbon sugar-phosphate known as
    • A. 

      Cyclic AMP.

    • B. 

      NADH.

    • C. 

      NAD+.

    • D. 

      RuBP.

    • E. 

      CAM.

  • 6. 
    Light consists of units of energy called
    • A. 

      Electrons.

    • B. 

      Photons.

    • C. 

      Protons.

    • D. 

      Neutrons.

    • E. 

      Pigments.

  • 7. 
    Visible light has a wavelength range of
    • A. 

      400-700 nanometers.

    • B. 

      200-800 nanometers.

    • C. 

      200-400 nanometers.

    • D. 

      200-700 nanometers.

    • E. 

      0.001-100,000 nanometers

  • 8. 
    Which of the following has shortest wavelength by highest energy?
    • A. 

      Infrared rays

    • B. 

      X rays

    • C. 

      Gamma rays

    • D. 

      Ultra violet rays

    • E. 

      Red light

  • 9. 
    Molecules that absorb light are called
    • A. 

      Enzymes.

    • B. 

      Electron carriers.

    • C. 

      Pigments.

    • D. 

      Photosynthesizers.

    • E. 

      Absorbers.

  • 10. 
    Chlorophyll b absorbs in green wavelengths of light that chlorophyll a cannot absorb. In this respect, chlorophyll b acts as
    • A. 

      An accessory pigment.

    • B. 

      An energizer for photosynthetic bacteria.

    • C. 

      A light absorber in the green light.

    • D. 

      A more efficient pigment.

  • 11. 
    The photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific "reaction center chlorophyll," which in turn passes the energy to
    • A. 

      Photosystem I.

    • B. 

      Photosystem II.

    • C. 

      The primary electron acceptor.

    • D. 

      The secondary electron center.

    • E. 

      Cytochrome.

  • 12. 
    Which of the following is common to both cellular respiration and the light reactions of photosynthesis?
    • A. 

      The transfer of electrons to glucose

    • B. 

      The chemiosmotic formation of ATP

    • C. 

      Oxygen is one of the byproducts

    • D. 

      Mitochondria are essential organelles

    • E. 

      Must have light

  • 13. 
    Photosystem II absorbs photons that are slightly more energetic than photosystem I, because it has a pigment called
    • A. 

      P (680).

    • B. 

      P (700).

    • C. 

      Chlorophyll I.

    • D. 

      Chlorophyll II.

    • E. 

      Retinal.

  • 14. 
    • A. 

      ATP

    • B. 

      NADH

    • C. 

      NADPH

    • D. 

      Carbohydrates

    • E. 

      Water

  • 15. 
    The dark reactions of photosynthesis are those that
    • A. 

      Convert chlorophylls into enzymes.

    • B. 

      Convert enzymes into chlorophylls.

    • C. 

      Convert water into hydrogen and oxygen.

    • D. 

      Convert CO(2) into reduced molecules (sugars).

    • E. 

      Only occur in the dark.

  • 16. 
    In dark reactions, when CO(2) is added to a molecule of RUBP the product is
    • A. 

      Citric acid.

    • B. 

      Glucose.

    • C. 

      Glyceraldehyde-3-phosphate.

    • D. 

      Phosphoglycerate.

    • E. 

      Pyruvate.

  • 17. 
    The cyclic carbon fixation reactions are also known as the
    • A. 

      Krebs cycle.

    • B. 

      Calvin cycle.

    • C. 

      Citric acid cycle.

    • D. 

      Tri carboxylic acid cycle.

    • E. 

      Blackman cycle.

  • 18. 
    How many revolutions of the Calvin cycle are required to produce the sugar glucose?
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      5

    • E. 

      6

  • 19. 
    In which part of the chloroplasts are the Calvin cycle enzymes located?
    • A. 

      Stroma

    • B. 

      Thylakoids

    • C. 

      Grana

    • D. 

      Envelope

    • E. 

      Cristae

  • 20. 
    The photosynthetic electron transport causes the accumulation of protons in which part of the chloroplast?
    • A. 

      Matrix

    • B. 

      Stroma

    • C. 

      Envelope

    • D. 

      Outer membrane

    • E. 

      Internal thylakoid space

  • 21. 
    Embedded in the thylakoid membrane and protuding as knobs form the outer surface into the stroma, there are
    • A. 

      Enzymes that fix carbon dioxide.

    • B. 

      Proton channels that synthesize ATP.

    • C. 

      Chlorophyll a and b.

    • D. 

      P(680) and P(700).

    • E. 

      Specialized bundle sheath cells.

  • 22. 
    What products of light reactions of phtosynthesis are use in the Calvin cycle?
    • A. 

      Oxygen and protons

    • B. 

      Carbon dioxide and water

    • C. 

      ATP and NADPH

    • D. 

      ADP and NADP

    • E. 

      Glucose and oxygen

  • 23. 
    Most of the atmospheric oxygen occurs as a result of phtosynthesis. From which of the following molecules is the oxygen derived?
    • A. 

      Water

    • B. 

      Carbon dioxide

    • C. 

      Glucose

    • D. 

      Chlorophyll

  • 24. 
    If they thylakoid membrane became leaky to ions, what would you predict to be the result on the light reaction?
    • A. 

      It would stop ATP production

    • B. 

      It would stop NADPH production

    • C. 

      It would stop oxidation of H(2)O

    • D. 

      It would stop CO(2) fixation