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5.3 Hormonal coordination in humans

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Question 12

A medicine blocks thyroxine from acting on the pituitary gland. The pituitary gland releases TSH, which acts on the thyroid gland.

Which effect could result from taking the medicine?

[1]
A

TSH stops being released when thyroxine is below normal

B

Thyroxine continues to be released by the pituitary gland

C

TSH prevents the thyroid gland from releasing thyroxine

D

TSH continues to be released when thyroxine is above normal

Markscheme

5.3 Hormonal coordination in humans Questions

  1. GCSE
  2. /Biology
  3. /5.3 Hormonal coordination in humans

85 exam-style questions on AQA GCSE Biology 5.3 Hormonal coordination in humans, covering 5.3.1 Human endocrine system, 5.3.2 Control of blood glucose concentration, 5.3.3 Maintaining water and nitrogen balance in the body, 5.3.4 Hormones in human reproduction, 5.3.5 Contraception, 5.3.6 The use of hormones to treat infertility (HT only), and 5.3.7 Negative feedback (HT only). Each one has a worked solution and a mark scheme showing where the marks go.

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