17.2.1 - Structure of Contractile Proteins
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Practice Questions
Test your understanding with targeted questions
What protein forms the thin filament in muscles?
💡 Hint: Think of the protein that enables muscle contraction.
What is the function of tropomyosin in muscle contraction?
💡 Hint: This protein prevents myosin from binding to actin at rest.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What proteins are primarily involved in muscle contraction?
💡 Hint: Think of the proteins that allow muscles to contract.
True or False: Troponin masks the active sites on myosin.
💡 Hint: Remember which protein interacts with actin.
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Challenge Problems
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Explain, in detail, how an action potential in a motor neuron leads to muscle contraction, incorporating calcium ions, troponin, and tropomyosin into your answer.
💡 Hint: Work through the steps logically from neuron activation to muscle contraction.
Design an experiment to demonstrate the effects of ATP depletion on muscle contraction, including predictions about what would happen to myosin-actin interactions.
💡 Hint: Consider the role of ATP in the myosin head function.
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