| Date | May 2017 | Marks available | 1 | Reference code | 17M.1.HL.TZ2.37 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 37 | Adapted from | N/A |
Question
What is the role of calcium in muscle contraction?
A. To release tropomyosin from myosin
B. To bind to troponin so myosin-binding sites on actin are exposed
C. To bind to tropomyosin so ATP can bind to actin
D. To release ATP from actin so myosin can bind to troponin
Markscheme
B
Examiners report
[N/A]
Syllabus sections
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