Which of these conditions in the human body is controlled by homeostasis?
The volume of air breathed in and out each minute
The concentration of glucose in the blood plasma
The number of red blood cells made in the bone marrow
The speed at which the muscles of the arm contract
40 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.