DP Biology (first assessment 2025)

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Question 23M.1A.HL.TZ1.38

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.HL.TZ1.38
Level HL Paper 1A Time zone TZ1
Command term Question number 38 Adapted from N/A
38.
[Maximum mark: 1]
23M.1A.HL.TZ1.38

What is contained in skeletal muscle?

A.  Cross bridges between muscle fibres

B.  Sarcomeres formed of contractile myofibrils

C.  Myosin filaments forming cross bridges with troponin and tropomyosin

D.  Multinucleate cells with numerous microfibrils made of contractile sarcomeres

[1]

Markscheme

D

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