Quiz: Structure of Muscle Fibres
Pearson Edexcel Level 3 Advanced GCE in Biology A (Salters-Nuffield) (9BN0)
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Building on what you've learned about muscles, let's test your understanding of the structure of muscle fibres!
Which protein forms the thick filaments in muscle fibres?
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Which of the following are components of a sarcomere? (Select all that apply)
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The {{blank0}} is the basic contractile unit of a muscle fibre, and its boundaries are marked by {{blank1}}.
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Match the items on the left with their correct pairs on the right
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If a sarcomere contracts from 2.5 μm to 2.0 μm, what is the change in length?
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What is the role of the sarcoplasmic reticulum in muscle fibres?
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Which of the following are features of muscle fibres? (Select all that apply)
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Match the items on the left with their correct pairs on the right
During contraction, the {{blank0}} shortens as actin and myosin filaments slide past each other, but the {{blank1}} remains the same length.
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