ExpertEasy1 markMultiple Choice
AQA GCSE · Question 02.1 · Homeostasis and Response
Many human actions are reflexes. Which statement describes a reflex action?
Many human actions are reflexes. Which statement describes a reflex action?
Answer options:
A.
A reflex action does not need a sense organ.
B.
A reflex action is a slow action.
C.
A reflex action is automatic.
How to approach this question
Consider the characteristics of a reflex, such as blinking or pulling your hand away from a hot object. Are they slow or fast? Do you think about them before they happen? Do they involve detecting a stimulus? Evaluate each statement based on these characteristics.
Full Answer
C.A reflex action is automatic.✓ Correct
A reflex action is a rapid, involuntary (automatic) response to a stimulus. The purpose of most reflexes is to protect the body from danger.
- They are not slow; they are extremely fast.
- They require a sense organ (or receptor) to detect the stimulus.
- They are automatic, meaning they occur without conscious control or thought.
Common mistakes
✗ Thinking reflexes are slow. They must be fast to be protective.
✗ Believing a sense organ isn't needed. A stimulus must be detected for a reflex to occur.
Practice the full AQA GCSE Biology Foundation Tier Paper 2
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