Biology · Oct / Nov 2017 · Paper 22 · Question 5
5090
As printed in the paper
The question as text
Muscles are arranged around joints in pairs. One muscle contracts to bend a limb at a joint, and the other contracts to straighten it.
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Show the answer and mark scheme
5(a)(i)[1]
5(a)(ii)[1]
5(b)(i)[2]
5(b)(ii)[1]
5(c)[3]
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