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7.1 Hormones and coordination

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Question 27
H

A person cannot produce TSH. Their thyroid gland can still respond to TSH, and their hypothalamus is functioning normally.

Which combination is most likely before treatment?

[1]
A

High thyroxine concentration and high TRH release.

B

Low thyroxine concentration and low TRH release.

C

High thyroxine concentration and low TRH release.

D

Low thyroxine concentration and high TRH release.

Markscheme

7.1 Hormones and coordination Questions

  1. GCSE
  2. /Biology
  3. /7.1 Hormones and coordination

42 exam-style questions on Edexcel GCSE Biology 7.1 Hormones and coordination, covering 7.1.1 Endocrine glands and hormone transport, 7.1.2 Adrenalin and fight or flight, and 7.1.3 Thyroxine and negative feedback. Each one has a worked solution and a mark scheme showing where the marks go.

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