SAT Biology Practice Test 4: Energy, Respiration, and Photosynthesis

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Question 5 questions

Time 4 minutes

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1. How does the ATP synthase enzyme function in the cell?

A. It uses energy to move ions against their concentration gradient by removing a phosphate group from ATP.
B. It uses the power of ions moving against their concentration gradient to add a phosphate group to ADP.
C. It uses the power of ions moving down their concentration gradient to add a phosphate group to ADP.
D. It uses the power of ions moving against their concentration gradient to remove a phosphate group from ATP.
E. It uses the power of ions moving down their concentration gradient to remove a phosphate group from ATP.

2. Which choice matches each description below to the correct stage of aerobic respiration?

I. Produces most of the ATP

II. Produces carbon dioxide (CO2)

III. Uses oxygen (O2)

A. I = chemiosmosis; II = electron transport chain; III = citric acid cycle
B. I = chemiosmosis; II = citric acid cycle; III = electron transport chain
C. I = citric acid cycle; II = chemiosmosis; III = electron transport chain
D. I = electron transport chain; II = chemiosmosis; III = citric acid cycle
E. I = electron transport chain; II = citric acid cycle; III = chemiosmosis

3. Which of these produces a three-carbon sugar from carbon dioxide?

A. Photosystem I
B. Photosystem II
C. Electron transport chain
D. Calvin cycle
E. Citric acid cycle

4. Which of these releases carbon dioxide?

I. Lactic acid fermentation

II. Alcohol fermentation

III. Aerobic respiration

IV. Photosynthesis

A. I and II
B. I and III
C. II and III
D. II and IV
E. III and IV

5. All of the following take place in the thylakoid of the chloroplast EXCEPT

A. NADP+ is reduced to create NADPH
B. hydrogen ions are pumped against their concentration gradient
C. ATP is produced by the ATP synthase enzyme
D. excited electrons transfer energy to an electron transport chain
E. carbon dioxide molecules are converted to a three-carbon sugar