Bio-energetics Mcqs

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Mdcat Test

Bio-energetic

Bioenergetic Mcqs for any kind of medical exam

MDCAT, KMUCAT, NEET, JEE IMAT

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1. Photosystem II differs from Photosystem I in that:

Photosystem II uses water as an electron donor.

Photosystem II operates only in the dark.

Photosystem I generates oxygen.

Photosystem I is involved in the Calvin cycle.

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2. Which of the following statements is correct about light-dependent and light-independent reactions?

Light-dependent reactions produce glucose.

Both occur in the stroma.

Light-dependent reactions fix CO2.

Light-independent reactions require ATP and NADPH.

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3. During oxidative phosphorylation, ATP is generated through the process known as:

Fermentation

Chemiosmosis

Photophosphorylation

Substrate-level phosphorylation

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4. Which factor is least likely to affect the rate of photosynthesis?

Temperature

Oxygen concentration

Carbon dioxide concentration

Light intensity

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5. The majority of ATP in aerobic respiration is produced in:

Electron Transport Chain

Glycolysis

Krebs Cycle

Calvin Cycle

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6. Which of the following statements is true about the overall process of photosynthesis?

It converts chemical energy into light energy.

It releases CO2 and consumes oxygen.

It stores energy in the form of glucose.

It only occurs in the presence of oxygen.

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7. Which of the following is true about the role of light in photosynthesis?

It is required in the Calvin cycle.

It directly synthesizes glucose.

It provides energy to split water molecules

It fixes carbon dioxide into organic molecules.

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8. Which of the following best describes the Calvin Cycle?

It occurs in the thylakoid membrane.

It produces oxygen as a byproduct.

It is dependent on light energy.

It synthesizes glucose from CO2 and H2O.

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9. Which of the following distinguishes anaerobic from aerobic respiration?

Anaerobic respiration does not involve the Krebs cycle.

Both produce equal amounts of ATP.

Anaerobic respiration requires oxygen.

Aerobic respiration produces lactic acid.

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10. Which of the following is a final electron acceptor in anaerobic respiration?

Water

Sulfate

NAD+

Oxygen

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11. Where does glycolysis occur within the cell?

Cytoplasm

Mitochondria

Chloroplast

Nucleus

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12. Which molecule is a product of non-cyclic photophosphorylation in photosynthesis?

ADP

NADP+

Carbon dioxide

Oxygen

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13. Glycolysis results in the net production of which of the following per glucose molecule?

4 ATP, 4 NADH

2 ATP, 2 NADH

4 ATP, 2 NADH

2 ATP, 4 NADH

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14. What is the primary purpose of the light-dependent reactions of photosynthesis?

To produce glucose

To generate ATP and NADPH

To fix carbon into a stable form

To convert CO2 into oxygen

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User Name	Duration	Score
Muskan	2 minutes 20 seconds	78%
Muskan	5 minutes 37 seconds	42%
Haya	3 minutes 56 seconds	57%
Sajid khan	36 seconds	28%