Class XI · Biology practice

Respiration in Plants PYQs

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15 questions in this collection · Page 2 of 2

Question 11 of 15

🟢 NEET 2024 📘 CLASS XI

Respiration In Plants

Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate:

Explanation: NCERT Page No.158, (Topic-12.4.1 Tricarboxylic Acid Cycle)

Question 12 of 15

🟢 NEET 2024 📘 CLASS XI

Respiration In Plants

Match List I with List II:

	List-I		List-II
A.	Citric acid cycle	I.	Cytoplasm
B.	Glycolysis	II.	Mitochondrial matrix
C.	Electron transport system	III.	Intermembrane space of mitochondria
D.	Proton gradient	IV.	Inner mitochondrial membrane

Choose the correct answer form the options given below:

Citric acid cycle - Mitochondrial matrix (NCERT Page No. 159).

Glycolysis - Cytoplasm (NCERT Page No. 155).

Electron transport system - Inner mitochondrial membrane (NCERT Page No. 159).

Proton gradient - Intermembrane space of mitochondria (NCERT Page No. 160).

Question 13 of 15

🟢 Re NEET 2026 📘 CLASS XI

Respiration In Plants

How many molecules of pyruvic acid are produced at the end of glycolysis from 206 molecules of glucose?

Each molecule of glucose produces two molecules of pyruvic acid during glycolysis. Therefore, 206 glucose molecules produce 412 pyruvic acid molecules.

Question 14 of 15

🟢 NEET 2026 📘 CLASS XI

Respiration In Plants

2(C₅₁H₉₈O₆) + 145O₂ → 102CO₂ + 98H₂O + energy

The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation, would be:

RQ = CO₂ produced / O₂ consumed = 102/145 ≈ 0.70, which is characteristic of fats.

Question 15 of 15

🟢 NEET 2026 📘 CLASS XI

Respiration In Plants

Match List-I with List-II:

List-I (Process)	List-II (Location)
A. Glycolysis	I. Inner mitochondrial membrane
B. ETS	II. Mitochondrial matrix
C. Accumulation of protons	III. Cytoplasm
D. Krebs' cycle	IV. Intermembrane space

Glycolysis occurs in the cytoplasm, ETS on the inner mitochondrial membrane, protons accumulate in the intermembrane space and the Krebs cycle occurs in the mitochondrial matrix.

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