Which Statement About Actin Is True

question 61

Multiple Choice

Which statement about actin is true?

• A) Two strands of tropomyosin are twisted around polymerized actin.
• B) Actin carries out the power stroke motion that allows filaments to slide during contraction.
• C) Actin is the only protein making up thin filaments in a muscle fiber.
• D) Troponin forms the head of the actin molecule.
• E) Tropomyosin has ATPase activity and interacts with the actin.

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Definitions:

Debit

An entry on the left side of an account, indicating an increase in assets or expenses, or a decrease in liabilities, equity, or revenue.

Credit

An accounting entry that increases liabilities or equity or decreases an asset or expense. In finance, it's also the ability to obtain goods or services before payment, based on the trust that payment will be made in the future.

Underapplied Manufacturing Overhead

A situation where the allocated manufacturing overhead costs are less than the actual overhead costs incurred, leading to an underestimation of product costs.

Overapplied Manufacturing Overhead

Refers to a situation where the estimated manufacturing overhead cost is more than the actual manufacturing overhead incurred during a period.