Bioenergetics| NTS Sindh Mdcat Past Paper MCQs | mosaicbro.com

Bioenergetics| NTS Sindh Mdcat Past Paper MCQs

7 of 47 questions (Page 4 of 7)

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22 The Calvin Cycle consists of ______ main reactions:
Correct Answer: A
Explanation: Calvin cycle has 3 phases: fixation, reduction, regeneration.
23 In which of the following processes ATP is produced? I. Photosynthesis II. Aerobic respiration III. Anaerobic respiration
Correct Answer: C
Explanation: ATP is generated in all three processes (photosynthesis, aerobic/anaerobic respiration).
24 Oxygen reacts with RuBP in the absence of CO₂ to form:
Correct Answer: B
Explanation: Rubisco oxygenase activity produces PGA + phosphoglycolate (photorespiration).
25 Plants convert solar energy into chemical energy present in the bonds of substances namely:
Correct Answer: C
Explanation: Light energy is stored as ATP and NADPH during photosynthesis.
26 In light reaction, antenna complex ______ is not found:
Correct Answer: A
Explanation: Hemoglobin is absent; antenna complexes contain chlorophylls/carotenoids.
27 What happens during the light phase of photosynthesis?
Correct Answer: B
Explanation: Light reactions produce ATP (photophosphorylation) and NADPH (reduction of NADP⁺).
28 What is oxidative phosphorylation?
Correct Answer: A
Explanation: Oxidative phosphorylation synthesizes ATP via ETC and chemiosmosis.
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