Cell physiology: active transport — KCSE Biology

KCSE Biology · 113 practice questions · 3 syllabus objectives

44 easy46 medium23 hard

What You'll Learn

Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.

Define active transport and state when it occurs

Distinguish active transport from diffusion and osmosis

Cell physiology: active transport

Sample Questions

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1
easySHORT ANSWER3 marks

State three examples of substances that are typically transported by active transport in cells. (3 marks)

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Part (a) — 3 marks
Glucose (1 mk)
Sodium ions (Na+) (1 mk)
Potassium ions (K+) (1 mk)
2
easySHORT ANSWER3 marks

State three physiological processes that are involved in the movement of substances across the cell membrane.

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Part (a) — 3 marks
Diffusion (1 mk)
Osmosis (1 mk)
Active transport (1 mk)
3
easySHORT ANSWER3 marks

Name two organs in a mammalian body where active transport occurs.

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Part (a) — 3 marks
Kidney / kidney tubules (reabsorption of glucose and salts) (1 mk)
Small intestine / ileum (absorption of nutrients) (1 mk)
Nerve cells / neurons (sodium-potassium pump) (1 mk)
4

Why is oxygen important in the process of active transport in cells?

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