Cambridge IGCSE Biology practice

Paper 4 structured question: Homeostasis

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Paper

Marks

Topic

Homeostasis

Exam-style question

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Paper 4Theory (Extended)3 marks

Diagram of skin showing hairs, hair erector muscles, sweat glands, receptors, sensory neurons, blood vessels, and fatty tissue.

Diagram Description

A labelled diagram shows the following parts: hairs, hair erector muscles, sweat glands, receptors, sensory neurons, blood vessels, and fatty tissue.

a
Identify the part of the skin that detects stimuli such as touch and temperature.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
State the role of sensory neurons in the skin.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 4Theory (Extended)2 marks

Diagram Description

A labelled diagram shows the following parts: hairs, hair erector muscles, sweat glands, receptors, sensory neurons, blood vessels, and fatty tissue.

a
Identify the part of the skin that produces sweat.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
State the function of the hair erector muscle.
Your answer
Aim for approximately 1 distinct marking point.
[1]