A long-term study follows two adolescents. Participant R has a thyroxine concentration that remains above normal, while Participant S has a thyroxine concentration that remains below normal.
Which pair of outcomes is most likely?
R has slower chemical reactions at rest; S has faster growth and development.
R stores more glucose as glycogen; S reabsorbs more water in the kidneys.
R has faster chemical reactions at rest; S has impaired growth and development.
R reabsorbs less water in the kidneys; S converts more glycogen into glucose.
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.