Cellular Respiration & Glycolysis — NEET Biology MCQs with Solutions
Free NEET Biology Cellular Respiration & Glycolysis MCQs with step-by-step solutions (6 questions). Part of Respiration in Plants. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Cellular Respiration & Glycolysis · easy · theory
Glycolysis (the EMP pathway) occurs in the ______ of the cell:
A. Mitochondrial matrix
B. Cytoplasm ✓ Correct
C. Inner mitochondrial membrane
D. Nucleus
Solution: Glycolysis takes place in the cytoplasm and is common to both aerobic and anaerobic respiration.
Q2 — Cellular Respiration & Glycolysis · easy · theory
The end product of glycolysis is:
A. Pyruvic acid (pyruvate) ✓ Correct
B. Acetyl CoA
C. Lactic acid
D. Ethanol
Solution: One glucose (6-C) is split into two molecules of pyruvate (3-C) during glycolysis.
Q3 — Cellular Respiration & Glycolysis · medium · theory
The net gain of ATP and NADH per glucose in glycolysis is:
A. 8 ATP and 2 NADH
B. 2 ATP and 4 NADH
C. 4 ATP and 4 NADH
D. 2 ATP and 2 NADH ✓ Correct
Solution: Glycolysis uses 2 ATP and makes 4 (net 2 ATP) plus 2 NADH per glucose molecule.
Q4 — Cellular Respiration & Glycolysis · medium · theory
The enzyme-catalysed first committed step where glucose is phosphorylated uses:
A. ATP (converting glucose to glucose-6-phosphate) ✓ Correct
B. Inorganic phosphate only
C. NADH
D. FADH₂
Solution: Glucose is phosphorylated to glucose-6-phosphate using ATP — one of two priming (investment) steps.
Q5 — Cellular Respiration & Glycolysis · hard · theory
Substrate-level phosphorylation in glycolysis refers to:
A. Direct transfer of a phosphate from a substrate to ADP forming ATP ✓ Correct
B. ATP made via the ETS
C. Phosphorylation using light
D. Chemiosmotic ATP synthesis
Solution: In glycolysis, ATP is produced directly from high-energy intermediates (e.g. 1,3-BPG, PEP), not via the ETS.
Q6 — Cellular Respiration & Glycolysis · hard · theory
In glycolysis, the oxidation of glyceraldehyde-3-phosphate reduces:
A. NADP⁺ to NADPH
B. O₂ to water
C. FAD to FADH₂
D. NAD⁺ to NADH ✓ Correct
Solution: The dehydrogenation of G3P (to 1,3-BPG) reduces NAD⁺ to NADH + H⁺.