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CAIE A-Level Biology 15.2.1 Rapid Response in Venus Fly Traps

Practise tracing sensory-hair stimulation through action potentials, calcium and proton movement to water entry, hinge-cell turgor change and rapid trap closure.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • trace repeated hair stimulation to action potentials and calcium entry into hinge cells
  • link proton movement and water entry with hinge-cell turgor and rapid trap closure
  • compare Venus fly trap closure with a different cellular mechanism for touch response

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