| Date | May 2022 | Marks available | 1 | Reference code | 22M.1.SL.tz0.15 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 15 | Adapted from | N/A |
Question
The diagram shows a motor unit. In which area does the neurotransmitter acetylcholine act?
[Source: Designua / Shutterstock.]
Markscheme
D
Examiners report
The majority of candidates were able to select D as the correct answer and appeared to be well prepared for this question, which is a little more applied than directly labelling structures. A relatively equal number of students were distracted by the other responses, therefore consider different ways of presenting information regarding the structure and function of a motor unit.
Syllabus sections
- 17N.1.SL.tz0.15: Which is the correct sequence of neural impulse transmission to the muscle? A. cell body →...
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18N.1.SL.tz0.15:
What is the structure labelled X in the diagram below?
[Source: Designua/Shutterstock]
A. Axon
B. Muscle
C. Dendrite
D. Cell body
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20N.1.HL:.tz0.12:
The diagram shows a motor unit. What is the structure labelled X?
[Source: By Designua / Shutterstock.]
A. Axon
B. Nucleus
C. Cell body
D. Dendrite
- 21N.1.SL.tz0.15: The diagram shows a motor unit. What structure is labelled X? A. Dendrite B. Axon C....
