Chapter 10 Test - AP Biology

40 Questions | Total Attempts: 2745

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Chapter 10 Test - AP Biology

Questions and Answers
  • 1. 
    Organisms that can exist with light as an energy source and an inorganic form of carbon and other raw materials
    • A. 

      Are called photoautotrophs.

    • B. 

      Do not exist in nature.

    • C. 

      Are called heterotrophs.

    • D. 

      Are best classified as decomposers.

    • E. 

      Both C and D

  • 2. 
    Which type of organism obtains energy by metabolizing molecules produced by other organisms?
    • A. 

      Autotrophs

    • B. 

      Heterotrophs

    • C. 

      Decomposers

    • D. 

      B and C

    • E. 

      A, B, and C

  • 3. 
    The early suggestion that the oxygen (O2) liberated from plants during photosynthesis comes from water was
    • A. 

      First proposed by C.B. van Niel of Stanford University.

    • B. 

      Confirmed by experiments using oxygen-18 (18O).

    • C. 

      Made following the discovery of photorespiration because of rubisco's sensitivity to oxygen.

    • D. 

      A and B

    • E. 

      A, B, and C

  • 4. 
    If photosynthesizing green algae are provided with CO2 synthesized with heavy oxygen (18O), later analysis will show that all but one of the following compounds produced by the algae contain the 18O label. That one exception is
    • A. 

      PGA.

    • B. 

      PGAL.

    • C. 

      Glucose.

    • D. 

      RuBP.

    • E. 

      O2.

  • 5. 
    Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?
    • A. 

      CO2 and glucose

    • B. 

      H2O and O2

    • C. 

      ADP, Pi, and NADP+

    • D. 

      Electrons and H+

    • E. 

      ATP and NADPH

  • 6. 
    What is the primary function of the light reactions of photosynthesis?
    • A. 

      To produce energy-rich glucose from carbon dioxide and water

    • B. 

      To produce ATP and NADPH

    • C. 

      To produce NADPH used in respiration

    • D. 

      To convert light energy to the chemical energy of PGAL

    • E. 

      To use ATP to make glucose

  • 7. 
    What are the products of the light reactions that are subsequently used by the Calvin cycle?
    • A. 

      Oxygen and carbon dioxide

    • B. 

      Carbon dioxide and RuBP

    • C. 

      Water and carbon

    • D. 

      Electrons and photons

    • E. 

      ATP and NADPH

  • 8. 
    Where does the Calvin cycle take place?
    • A. 

      Stroma of the chloroplast

    • B. 

      Thylakoid membrane

    • C. 

      Cytoplasm surrounding the chloroplast

    • D. 

      Chlorophyll molecule

    • E. 

      Outer membrane of the chloroplast

  • 9. 
    A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are not being absorbed by this pigment?
    • A. 

      Red and yellow

    • B. 

      Blue and violet

    • C. 

      Green and yellow

    • D. 

      Blue, green, and red

    • E. 

      Green, blue, and violet

  • 10. 
    During photosynthesis, visible light has enough energy to
    • A. 

      Force electrons closer to the nucleus.

    • B. 

      Excite electrons.

    • C. 

      Split a water molecule into hydrogen and oxygen.

    • D. 

      B and C only.

    • E. 

      A, B, and C.

  • 11. 
    Use the following information to answer the question after the paragraph.  Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light.  He added aerobic bacteria and then noted in which areas the bacteria congregated.  He noted that the largest groups were found in the areas illuminated by the red and blue light. What did Engelmann conclude about the congregation of bacteria in the red and blue areas?
    • A. 

      Bacteria released excess carbon dioxide in these areas.

    • B. 

      Bacteria congregated in these areas due to an increase in the temperature of the red and blue light.

    • C. 

      Bacteria congregated in these areas because these areas had the most oxygen being released.

    • D. 

      Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths.

    • E. 

      Bacteria congregated in these areas due to an increase in the temperature caused by an increase in photosynthesis.

  • 12. 
    Use the following information to answer the questions below.  Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light.  He added aerobic bacteria and then noted in which areas the bacteria congregated.  He noted that the largest groups were found in the areas illuminated by the red and blue light. An outcome of this experiment was to help determine
    • A. 

      The relationship between heterotrophic and autotrophic organisms.

    • B. 

      The relationship between wavelengths of light and the rate of aerobic respiration.

    • C. 

      The relationship between wavelengths of light and the amount of heat released.

    • D. 

      The relationship between wavelengths of light and the oxygen released during photosynthesis.

    • E. 

      The relationship between the concentration of carbon dioxide and the rate of photosynthesis.

  • 13. 
    Use the following information to answer the questions below.  Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light.  He added aerobic bacteria and then noted in which areas the bacteria congregated.  He noted that the largest groups were found in the areas illuminated by the red and blue light. If you ran the same experiment without passing light through a prism, what would you predict?
    • A. 

      There would be no difference in results.

    • B. 

      The bacteria would be relatively evenly distributed along the algal filaments.

    • C. 

      The number of bacteria present would decrease due to an increase in the carbon dioxide concentration.

    • D. 

      The number of bacteria present would increase due to an increase in the carbon dioxide concentration.

    • E. 

      The number of bacteria would decrease due to a decrease in the temperature of the water.

  • 14. 
    This figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?
    • A. 

      Green and yellow wavelengths inhibit the absorption of red and blue wavelengths.

    • B. 

      Bright sunlight destroys photosynthetic pigments.

    • C. 

      Oxygen given off during photosynthesis interferes with the absorption of light.

    • D. 

      Other pigments absorb light in addition to chlorophyll a.

    • E. 

      Aerobic bacteria take up oxygen which changes the measurement of the rate of photosynthesis.

  • 15. 
    What wavelength of light is most effective in driving photosynthesis?
    • A. 

      420 mm

    • B. 

      475 mm

    • C. 

      575 mm

    • D. 

      625 mm

    • E. 

      730 mm

  • 16. 
    In the thylakoid membranes, what is the main role of the antenna pigment molecules?
    • A. 

      Split water and release oxygen to the reaction-center chlorophyll

    • B. 

      Harvest photons and transfer light energy to the reaction-center chlorophyll

    • C. 

      Synthesize ATP from ADP and Pi

    • D. 

      Transfer electrons to ferredoxin and then NADPH

    • E. 

      Concentrate photons within the stroma

  • 17. 
    The reaction-center chlorophyll of photosystem I is known as P700 because
    • A. 

      There are 700 chlorophyll molecules in the center.

    • B. 

      This pigment is best at absorbing light with a wavelength of 700 nm.

    • C. 

      There are 700 photosystem I components to each chloroplast.

    • D. 

      It absorbs 700 photons per microsecond.

    • E. 

      The plastoquinone reflects light with a wavelength of 700 nm.

  • 18. 
    All of the events listed below occur in the light reactions of photosynthesis except
    • A. 

      Oxygen is produced.

    • B. 

      NADP+ is reduced to NADPH.

    • C. 

      Carbon dioxide is incorporated into PGA.

    • D. 

      ADP is phosphorylated to yield ATP.

    • E. 

      Light is absorbed and funneled to reaction-center chlorophyll a.

  • 19. 
    Which of the following statements about the light reactions of photosynthesis are true?
    • A. 

      The splitting of water molecules provides a source of electrons.

    • B. 

      Chlorophyll (and other pigments) absorb light energy, which excites electrons.

    • C. 

      ATP is generated by photophosphorylation.

    • D. 

      Only A and C are true.

    • E. 

      A, B, and C are true.

  • 20. 
    Which statement regarding events in the functioning of photosystem II is false?
    • A. 

      Light energy excites electrons in an antenna pigment in a photosynthetic unit.

    • B. 

      The excitation is passed along to a molecule of P680 chlorophyll in the photosynthetic unit.

    • C. 

      The P680 chlorophyll donates a pair of protons to NADPH, which is thus converted to NADP+.

    • D. 

      The electron vacancies in P680 are filled by electrons derived from water.

    • E. 

      The splitting of water yields molecular oxygen as a by-product.

  • 21. 
    All of the following are directly associated with photosystem II except
    • A. 

      Extraction of hydrogen electrons from the splitting of water.

    • B. 

      Release of oxygen.

    • C. 

      Harvesting of light energy by chlorophyll.

    • D. 

      NADP+ reductase.

    • E. 

      P680 reaction-center chlorophyll.

  • 22. 
    All of the following are directly associated with photosystem I except
    • A. 

      Harvesting of light energy by chlorophyll.

    • B. 

      Receiving electrons from plastocyanin.

    • C. 

      P700 reaction-center chlorophyll.

    • D. 

      Extraction of hydrogen electrons from the splitting of water.

    • E. 

      Passing electrons to ferredoxin.

  • 23. 
    Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be
    • A. 

      To determine if they have thylakoids in the chloroplasts.

    • B. 

      To test for liberation of O2 in the light.

    • C. 

      To test for CO2 fixation in the dark.

    • D. 

      To do experiments to generate an action spectrum.

    • E. 

      To test for production of either sucrose or starch.

  • 24. 
    What are the products of noncyclic photophosphorylation?
    • A. 

      Heat and fluorescence

    • B. 

      ATP and P700

    • C. 

      ATP and NADPH

    • D. 

      ADP and NADP

    • E. 

      P700 and P680

  • 25. 
    What does cyclic electron flow in the chloroplast produce?
    • A. 

      ATP

    • B. 

      NADPH

    • C. 

      Glucose

    • D. 

      A and B

    • E. 

      A, B, and C

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