| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.HL.TZ1.36 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 36 | Adapted from | N/A |
Question
Which ions are released from the sarcoplasmic reticulum when a skeletal muscle fibre contracts?
A. Sodium
B. Potassium
C. Calcium
D. Chloride
Markscheme
C
Examiners report
N/A
Syllabus sections
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