Adrenaline causes more blood to flow to skeletal muscles and stimulates glucose release from the liver.
Which statement links these changes to muscle activity?
More glycogen reaches muscles, increasing substrate supply for respiration.
More glycogen reaches muscles, decreasing energy release during respiration.
More glucose reaches muscles, decreasing energy release during respiration.
More glucose reaches muscles, increasing substrate supply for respiration.
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.