Igcse Model Questions Vol1 2021 Biology Question 13

Practice objective / multiple choice question 13 from the 2021 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2021 Biology Objective / Multiple Choice Easy Difficulty
Question 13 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective
Igcse Model Questions Vol1 2021 Biology Question 13 diagram

The diagram shows a typical plant cell with its major organelles labelled. A toxin blocks the electron transport chain in one organelle, preventing ATP synthesis.\n\n(a) Identify the organelle most likely affected.\n(b) Explain briefly how inhibition of this organelle would affect the cell's energy supply.

Answer Options

Correct Answer A. a) Mitochondrion. b) Inhibition stops oxidative phosphorylation, drastically reducing ATP availability for the cell.
B. a) Golgi apparatus. b) Inhibition prevents vesicle trafficking, decreasing delivery of ATP to the cytoplasm.
C. a) Endoplasmic reticulum. b) Inhibition halts protein folding, limiting enzyme availability for cellular processes.
D. a) Chloroplast. b) Inhibition stops photosynthetic electron transport, reducing glucose production for the cell.
Correct Answer
A
Correct Option:
a) Mitochondrion. b) Inhibition stops oxidative phosphorylation, drastically reducing ATP availability for the cell.

About This Question

This is Igcse Model Questions Vol1 2021 Biology Question 13. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Easy .

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