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CAIE A-Level Biology A2 12.2.1 Four Stages of Aerobic Respiration Location Questions

Describe the four aerobic-respiration stages and locations using evidence from each question and mark scheme.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • Describe the four stages of aerobic respiration and where each occurs in cells.

CAIE A-Level Biology A2 12.2.1 Four Stages of Aerobic Respiration Location Questions question 1

[Maximum number: 4]

ATP is the universal energy currency which provides the immediate source of energy for cellular processes.

During a sporting event an athlete may have to carry out respiration in anaerobic as well as aerobic conditions to produce sufficient ATP.

Fig. 2.2 outlines both processes in a muscle cell and shows how a liver cell is linked to these processes.

Fig. 2.2

Fig. 2.2

You may refer to Fig. 2.2 in answering questions (i) to (v).

Complete the table to indicate, within the muscle cell, the exact locations of glycolysis, the link reaction, the Krebs cycle and oxidative phosphorylation.

Table for Question CAIE A-Level Biology A2 12.2.1 Four Stages of Aerobic Respiration Location Questions question 1 — CAIE A-Level Biology A2
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