AQA A LEVEL BIOLOGY PAPER 3| 7402/3 VERSION 1.0 FINAL QUESTION PAPERS & MERGED MARKING SCHEME | JUNE 2023
Describe how stimulation of a Pacinian corpuscle produces a generator potential. [3 marks] Scientists investigated the stimulation of a Pacinian corpuscle in the skin of a fingertip. The scientists applied two different pressures to the fingertip and recorded the changes in membrane potential of the Pacinian corpuscle’s sensory neurone. Figure 1 shows the scientists’ results. Figure 13 *03* Turn over ► IB/M/Jun23/7402/3 Do not write outside the 0 1 . 2 Use Figure 1 to describe what is meant by the all-or-nothing principle. box [2 marks
Written for
- Institution
- AQA A LEVEL BIOLOGY
- Module
- AQA A LEVEL BIOLOGY
Document information
- Uploaded on
- February 25, 2024
- Number of pages
- 68
- Written in
- 2023/2024
- Type
- Exam (elaborations)
- Contains
- Questions & answers
Subjects
-
aqa a level biology paper 3
Also available in package deal