Ch. 8 Review-PreAP Bio

Name: ________________________ Class: ___________________ Date: __________

ID: A

Ch. 8 Review-PreAP Bio

Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

____ 1. Organisms, such as plants, that make their own food are called

a. autotrophs.

c. thylakoids.

b. heterotrophs.

d. pigments.

____

2. What are the three parts of an ATP molecule?

a. adenine, thylakoids, stroma

c. adenine, ribose, phosphate groups

b. stroma, grana, chlorophyll

d. NADH, NADPH, and FADH2

____ 3. Energy is released from ATP when a. a phosphate group is added. b. adenine bonds to ribose.

c. ATP is exposed to sunlight. d. a phosphate group is removed.

____ 4. Which of the following is NOT a true statement about ATP? a. ATP consists of ribose, adenine, and phosphate. b. ADP forms when ATP releases energy.

c. ATP provides energy for the mechanical functions of cells. d. Used ATP is discarded by the cell as waste.

____ 5. Which of the following is(are) used in the overall reactions for photosynthesis?

a. carbon dioxide

c. light

b. water

d. all of the above

____ 6. In the overall equation for photosynthesis, six molecules of carbon dioxide result in six molecules of

a. glucose.

c. oxygen.

b. water.

d. ATP.

____ 7. Plants gather the sun's energy with light-absorbing molecules called

a. pigments.

c. chloroplasts.

b. thylakoids.

d. glucose.

____ 8. Which region of the visible spectrum is not absorbed well by chlorophyll?

a. blue

c. green

b. violet

d. red

____ 9. Where in the chloroplast is chlorophyll found?

a. in the stroma

c. in the ATP

b. in the thylakoid

d. in the glucose

____ 10. What are the products of the light-dependent reactions?

a. oxygen gas b. ATP

c. NADPH d. all of the above

____ 11. Which step is the beginning of photosynthesis? a. Pigments in photosystem I absorb light. b. Pigments in photosystem II absorb light.

c. High-energy electrons move through the electron transport chain. d. ATP synthase allows H+ ions to pass through the thylakoid membrane.

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Name: ________________________

ID: A

____ 12. Why does the inside of the thylakoid membrane become positively charged during the light-dependent reactions? a. H+ ions are released as water splits. b. ATP synthase allows H+ ions to pass through the membrane. c. ATP synthase produces ATP from ADP. d. Carbon dioxide builds up in the stroma.

____ 13. Where are photosystems I and II found? a. in the stroma b. in the thylakoid membrane

c. in the Calvin cycle d. all of the above

____ 14. What is a product of the Calvin cycle? a. oxygen gas b. ATP

c. high-energy sugars d. carbon dioxide gas

____ 15. How does the Calvin cycle differ from the light-dependent reactions?

a. It takes place in the stroma.

c. It requires light.

b. It takes place in chloroplasts.

d. It takes place in the thylakoid.

____ 16. A plant exposed to red light should grow better than one exposed to only green light.

a. true

b. false

____ 17. Chlorophyll a and chlorophyll b absorb which colors of the visible spectrum the best?

a. yellow and orange

c. red and yellow

b. violet and red

d. green and yellow

____ 18. If 6 molecules of carbon dioxide enter the Calvin cycle, __________ molecules of sugar are produced.

a. one

c. six

b. two

d. twelve

____ 19. During the Calvin cycle PGA molecules are converted to PGAL with _________ and _______ providing

energy.

a. ADP, ATP

c. ATP, NADPH

b. carbon dioxide, oxygen

d. ADP, NADP

Figure 8?1

____ 20. In Figure 8?1, between which parts of the molecule must the bonds be broken to form an ADP molecule?

a. A and B

c. C and D

b. B and C

d. all of the above

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Name: ________________________

ID: A

____ 21. A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27?C. The gas

being collected is probably

a. oxygen.

c. ATP.

b. carbon dioxide.

d. vaporized water.

____ 22. The stroma is the region outside the a. thylakoids. b. chloroplasts.

c. plant cells. d. all of the above

____ 23. Which of the following is inside the thylakoid membrane?

a. electron transport chain

c. ATP synthase

b. photosystem I

d. all of the above

____ 24. Which pathway represents the flow of electrons during photosynthesis? a. H2O Photosystem I Photosystem II b. O2 ADP Calvin cycle c. Photosystem I Calvin cycle NADPH d. H2O NADPH Calvin cycle

____ 25. The Calvin cycle takes place in the a. stroma. b. photosystems.

c. thylakoid membranes. d. chlorophyll molecules.

____ 26. Which of the following affects the rate of photosynthesis?

a. water

c. light intensity

b. temperature

d. all of the above

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Ch. 8 Review-PreAP Bio Answer Section

MULTIPLE CHOICE 1. A 2. C 3. D 4. D 5. D 6. C 7. A 8. C 9. B

10. D 11. B 12. A 13. B 14. C 15. A 16. A 17. B 18. A 19. C 20. C 21. A 22. A 23. D 24. D 25. A 26. D

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ID: A

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