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5.1 Homeostasis

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Question 21

A person climbs out of a heated treatment pool into a cold changing room, and their body temperature starts to fall. Three structures, K, L and M, work together to bring the body temperature back towards its optimum.

  • Structure K sends impulses as soon as the body temperature changes.
  • Structure L sends impulses to M only after it has received impulses from K.
  • Structure M contracts when it receives impulses from L.

Which statement about structure M is correct?

[1]
A

M is an effector because its contraction helps to restore the body temperature

B

M is a receptor because it receives the impulses sent from structure L

C

M is an effector because it detects the fall in the body temperature

D

M is a coordination centre because it processes the impulses from structure L

Markscheme

5.1 Homeostasis Questions

  1. GCSE
  2. /Biology
  3. /5.1 Homeostasis

76 exam-style questions on AQA GCSE Biology 5.1 Homeostasis, covering 5.1 Homeostasis. Each one has a worked solution and a mark scheme showing where the marks go.

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