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Respiration in Plants NEET PYQs
Class XI Biology
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NCERT Based
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NEET Practice
📘 Concept Based
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15 questions in this chapter
Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate:
A Succinic acid → Malic acid B Malic acid → Oxaloacetic acid C Isocitrate → α-ketoglutaric acid
D Succinyl-CoA → Succinic acid
Show explanation
Explanation: NCERT Page No.158, (Topic-12.4.1 Tricarboxylic Acid Cycle)
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:
A A-III, B-IV, C-I, D-II B A-IV, B-III, C-II, D-I C A-I, B-II, C-III, D-IV D A-II, B-I, C-IV, D-III
Show explanation
Citric acid cycle - Mitochondrial matrix (NCERT Page No. 159).
How many molecules of pyruvic acid are produced at the end of glycolysis from 206 molecules of glucose?
A 206 B 309 C 103 D 412
Show explanation
Each molecule of glucose produces two molecules of pyruvic acid during glycolysis. Therefore, 206 glucose molecules produce 412 pyruvic acid molecules.
2(C51 H98 O6 ) + 145O2 → 102CO2 + 98H2 O + energy
A Less than 0.5 B Between 1.25 and 2 C 1.0 D Between 0.5 and 0.95
Show explanation
RQ = CO₂ produced / O₂ consumed = 102/145 ≈ 0.70, which is characteristic of fats.
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
A A-IV, B-II, C-I, D-III B A-I, B-IV, C-III, D-II C A-II, B-III, C-IV, D-I D A-III, B-I, C-IV, D-II
Show explanation
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.
