Igcse Model Questions Vol1 2025 Biology Question 35

Practice objective / multiple choice question 35 from the 2025 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2025 Biology Objective / Multiple Choice Medium Difficulty
Question 35 IGCSE_MODEL_QUESTIONS_VOL1 • 2025 • BIOLOGY • objective

A plant cell can import glucose by two mechanisms. Facilitated diffusion can transport a maximum of \(2 \times 10^{6}\) glucose molecules per second without using ATP. Active transport can import any remaining glucose but requires one ATP molecule per glucose imported. If the cell needs to import \(5 \times 10^{6}\) glucose molecules per second, what fraction of the glucose must be taken up by active transport and how many ATP molecules are consumed each second?

Answer Options

A. 1\/2 (50%) of the glucose via active transport; 2,500,000 ATP molecules per second
Correct Answer B. 3/5 (60%) of the glucose via active transport; 3,000,000 ATP molecules per second
C. 2\/5 (40%) of the glucose via active transport; 2,000,000 ATP molecules per second
D. 4\/5 (80%) of the glucose via active transport; 4,000,000 ATP molecules per second
Correct Answer
B
Correct Option:
3/5 (60%) of the glucose via active transport; 3,000,000 ATP molecules per second

About This Question

This is Igcse Model Questions Vol1 2025 Biology Question 35. It is one of the objective questions from the 2025 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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