During Skeletal Muscle Contraction, Multiple Crossbridge Cycles Are Occurring Between

question 103

Multiple Choice

During skeletal muscle contraction, multiple crossbridge cycles are occurring between the same thick and thin filament. Which of the following best describes this process?

• A) No more than one myosin head detaches from the thin filament at the same time.
• B) Tropomyosin only exposes one binding site on actin at a time allowing only one crossbridge to form with actin at a given time.
• C) No more than one myosin head links to the thin filament at the same time.
• D) Crossbridge cycling is highly synchronized between a certain thick and thin filament.
• E) Crossbridge cycling is asynchronous between a certain thick and thin filament.

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Definitions:

Terminate

To bring to an end or to conclude something such as an agreement, employment, or process.

Principal Duty

The main or most important obligation that a party has under a contract or agreement.

Reimburse

To pay back someone for expenses they have incurred.

Gratuitous Agency

Gratuitous agency refers to an arrangement where an agent acts on behalf of a principal without receiving any compensation for their services, often based on personal or familial relationships.