IB Biology SL 2.2.4 Speed of impulse transmission Question Bank
Practise IB Biology SL 2.2.4 by explaining how myelin and axon diameter affect impulse transmission.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Describe how myelin increases transmission speed along an axon.
- Relate axon diameter to the speed of impulse transmission.
C2.2.4—Variation in impulse speed question 1
Scientists used MRI to calculate the speed of transmission of nerve impulses along axons of brain neurons.
Describe the relationship between speed of transmission and axon diameter.
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