A control system keeps an internal condition close to its optimum. A drug prevents receptors detecting a change in that condition. What is the most likely immediate consequence?
The coordination centre releases more receptors, so the corrective response becomes faster.
The effectors detect the stimulus directly, so the corrective response remains unchanged.
The effectors become coordination centres, so the condition returns immediately to optimum.
The coordination centre receives less information, so the corrective response may be delayed.
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.