Gce Model Questions Vol1 2023 Biology Question 18

Practice objective / multiple choice question 18 from the 2023 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2023 Biology Objective / Multiple Choice Medium Difficulty
Question 18 GCE_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • objective

During intense exercise a muscle cell produces \(2.5 \times 10^{9}\) ATP per minute. Seventy percent of the ATP is supplied by anaerobic glycolysis (2 ATP per glucose) and the remaining thirty percent by aerobic respiration (38 ATP per glucose). Calculate (a) the rate of glucose consumption from each pathway in molecules per minute, and (b) the rate of O₂ consumption (in molecules per minute) associated with the aerobic pathway.

Answer Options

A. (a) Anaerobic glucose ≈ 8.00 × 10⁸ molecules min⁻¹; aerobic glucose ≈ 1.50 × 10⁷ molecules min⁻¹. (b) O₂ consumption ≈ 1.00 × 10⁸ molecules min⁻¹ (≈1.0×10⁻¹⁶ mol min⁻¹).
Correct Answer B. (a) Anaerobic glucose ≈ 8.75 × 10⁸ molecules min⁻¹; aerobic glucose ≈ 1.97 × 10⁷ molecules min⁻¹. (b) O₂ consumption ≈ 1.18 × 10⁸ molecules min⁻¹ (≈1.2×10⁻¹⁶ mol min⁻¹).
C. (a) Anaerobic glucose ≈ 7.50 × 10⁸ molecules min⁻¹; aerobic glucose ≈ 2.00 × 10⁷ molecules min⁻¹. (b) O₂ consumption ≈ 9.00 × 10⁷ molecules min⁻¹ (≈9×10⁻¹⁷ mol min⁻¹).
D. (a) Anaerobic glucose ≈ 1.00 × 10⁹ molecules min⁻¹; aerobic glucose ≈ 2.50 × 10⁷ molecules min⁻¹. (b) O₂ consumption ≈ 1.50 × 10⁸ molecules min⁻¹ (≈1.5×10⁻¹⁶ mol min⁻¹).
Correct Answer
B
Correct Option:
(a) Anaerobic glucose ≈ 8.75 × 10⁸ molecules min⁻¹; aerobic glucose ≈ 1.97 × 10⁷ molecules min⁻¹. (b) O₂ consumption ≈ 1.18 × 10⁸ molecules min⁻¹ (≈1.2×10⁻¹⁶ mol min⁻¹).

About This Question

This is Gce Model Questions Vol1 2023 Biology Question 18. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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