Students use a computer simulation of hormone signalling. The simulation includes gland A in the brain, gland B, the bloodstream and a target organ.
Which event in the simulation represents the relationship that makes gland A a master gland?
A hormone from gland A has a longer-lasting effect than a nerve impulse.
A hormone from gland A travels in the blood to a target organ.
A hormone from gland A causes gland B to release its own hormone.
A hormone from gland A is released when conditions in the body change.
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.