Biochemistry - Photosynthesis and Respiration

Exercise :: Photosynthesis and Respiration - Section 1

  • Photosynthesis and Respiration - Section 1
36. 

Which enzyme is involved in carbon-fixation reaction?

A. NADP reductase
B. Cytochrome reductase
C. Ribulose bisphosphate carboxylase
D. Glycerol kinase

Answer: Option C

Explanation:

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37. 

Assume the combined processes of photosynthesis and cellular respiration, the electrons that start as part of H2O at the beginning of the light reactions end up attaching to

A. O2 to make new H2O
B. NADPH to make new glucose
C. pyruvate to make ethanol
D. electron transport carriers to make O2

Answer: Option A

Explanation:

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38. 

In the initial step of photosynthesis, sunlight energizes the electron pair of

A. adenosine triphosphate (ATP)
B. chlorophyll pigments
C. water
D. carbon dioxide

Answer: Option B

Explanation:

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39. 

Rubisco (RuBP Carboxylase-oxygenase enzyme), glyceraldehyde 3-phosphate, and NADPH all play a role in

A. the dark reactions of photosynthesis
B. the breakdown of glucose into CO2
C. cellular respiration when O2 is present
D. alcohol fermentation

Answer: Option A

Explanation:

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40. 

The electrons that are released by the splitting of water during photosynthesis ultimately end up in

A. ATP
B. O2
C. NADPH
D. rubisco

Answer: Option C

Explanation:

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