AP Self Quiz Chapter 10: Photosynthesis


1. Chloroplasts can make carbohydrate in the dark if provided with:
a. ATP.
b. NADPH.
c. CO2.
d. Only ATP and CO2 are correct.
e. ATP, NADPH and CO2 are correct.


Refer to the processes given below to answer the following question(s), indicating the pathway(s) in which they occur. Each pathway may be used once, more than once, or not at all.
  1. respiration only
  2. photosynthesis only
  3. both respiration and photosynthesis
  4. neither respiration nor photosynthesis
2. Chemiosmotic synthesis of ATP.
a. 1
b. 2
c. 3
d. 4

3. All of the following statements are true EXCEPT
a. Thylakoid membranes contain the photosynthetic pigments.
b. The O2 released during photosynthesis comes from water.
c. PGAL is produced only in the light reactions of photosynthesis.
d. The light reactions of photosynthesis provide the energy for the Calvin cycle.
e. When chlorophyll is reduced, it gains electrons.

4. You have just discovered a new flower species that 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

5. The chemiosomotic process in chloroplasts involves the
a. establishment of a proton gradient.
b. diffusion of electrons through the thylakiod membrane.
c. oxidation of water to produce ATP energy.
d. movement of water by osmosis into the thylakoid space from the stroma.
e. reduction of carbon dioxide to glucose by NADPH and ATP.

6. Which of the following 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 NADPH, which is thus converted to NADP+.
d. The electron vacancies in P680 are filled by electrons derived from water.
e. The spitting of water yields molecular oxygen as a by-product.

7. On which of the following features do plant and animal cells differ?
a. active transport mechanisms
b. mitochondrial function
c. primary energy source
d. transcription
e. structure of nucleus

8. All of the following statements are correct regarding the light-independent (dark) reactions of photosynthesis EXCEPT
a. The energy source utilized is the ATP and NADPH obtained through the light reaction.
b. This reaction begins soon after sundown and ends before sunrise.
c. The 5-carbon sugar RuBP is constantly being regenerated.
d. One of the end products is PGAL.
e. The pathway used is the Calvin cycle.

9. Cyclic electron flow in the chloroplast produces
a. ATP.
b. NADPH.
c. glucose.
d. Only ATP and NADPH are correct.
e. ATP, NADPH, and glucose are correct.

10. In plant cells, ATP is made in response to light. An electron transport chain is involved. This electron transport chain is found in the
a. thylakoid membranes of chloroplasts.
b. stroma of chloroplasts.
c. inner membrane of mitochondria.
d. matrix of mitochondria.
e. cytoplasm.

11. The process of noncyclic photophosphorylation uses light energy to synthesize
a. ADP and ATP.
b. ATP and P7000.
c. ATP and NADPH.
d. ADP and NADP.
e. P700 and P680.

Use the information below to answer the following question(s). Thomas 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.

12. What did he 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.

Refer to the choices below to answer the following question(s). Each choice may be used once, more than once, or not at all. Indicate whether the following events occur during:
  1. photosynthesis
  2. respiration
  3. both photosynthesis and respiration
  4. neither photosynthesis nor respiration

13. Synthesis of ATP by the chemiosmotic mechanism.
a. 1
b. 2
c. 3
d. 4

14. Electron flow along a cytochrome chain.
a. 1
b. 2
c. 3
d. 4

15. Generation of proton gradients across membranes.
a. 1
b. 2
c. 3
d. 4