In Skeletal Muscle During a Contraction Cycle

question 41

Multiple Choice

In skeletal muscle during a contraction cycle:

• A) Myosin-ATP complex has a high affinity for actin.
• B) Tropomyosin binds calcium.
• C) The rigor complex is broken by the binding of ADP to myosin.
• D) ATP hydrolysis provides the energy required for myosin flexure in the 'hinge regions'.
• E) The T tubules take up calcium via an active transport mechanism.

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