NEET (UG)

Practice Test 1 — Respiration in Plants

12 questions • 18 minutes • auto-graded with full solutions

⏱ 18:00

0 / 12 answered

[object Object]

0 / 12

0Correct

0Wrong

0Skipped

0:00Time used

Back to Study

Section A — MCQ (Single Correct)

Question 1

Glycolysis occurs in the:

Solution: Glycolysis is cytoplasmic.

Question 2

The net ATP produced in glycolysis per glucose is:

Solution: Net 2 ATP from glycolysis.

Question 3

Lactic acid fermentation occurs in:

Solution: Muscle (and some bacteria) form lactic acid anaerobically.

Question 4

Pyruvate is converted to acetyl CoA in the:

Solution: The link reaction occurs in the mitochondrial matrix.

Question 5

Per acetyl CoA, the Krebs cycle releases ___ molecules of CO₂:

Solution: 2 CO₂ are released per turn.

Question 6

In the ETC, the final electron acceptor is:

Solution: Oxygen accepts electrons, forming water.

Question 7

One FADH₂ yields about ___ ATP via the ETC:

Solution: 1 FADH₂ ≈ 2 ATP (NADH ≈ 3 ATP).

Question 8

The respiratory quotient of fats is:

Solution: Fats give RQ < 1 (~0.7).

Section B — Assertion & Reason

Question 9

A: Aerobic respiration yields far more ATP than fermentation.
R: In aerobic respiration the NADH and FADH₂ are oxidised through the electron transport chain to make ATP.

Solution: Feeding the reduced coenzymes into the ETC is what generates the extra ATP — R explains A.

Question 10

A: Oxygen is essential for the electron transport chain to keep running.
R: Oxygen is the final acceptor of electrons, combining with them to form water.

Solution: Without the final acceptor the chain backs up and stops — R explains A.

Question 11

A: Fermentation produces a large amount of ATP per glucose.
R: It completely oxidises glucose to carbon dioxide and water.

Solution: Both are false — fermentation gives only 2 ATP and is an INCOMPLETE oxidation (no CO₂/water from full oxidation).

Question 12

A: The respiratory pathway is described as amphibolic.
R: Its intermediates are used both to release energy and to build other biomolecules.

Solution: Serving both catabolism and anabolism is exactly what 'amphibolic' means — R explains A.