An experimental drug, Ry-Block, selectively inhibits the calcium release channels (ryanodine receptors) in the membrane of the sarcoplasmic reticulum in skeletal muscle fibres.
Explain how Ry-Block would prevent muscle contraction.
3 exam-style questions on AQA A Level Biology Skeletal muscles are stimulated to contract by nerves and act as effectors (A-level only), covering Skeletal muscles are stimulated to contract by nerves and act as effectors (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.