Which of the Following Statements Regarding Contraction in Skeletal and Smooth

question 51

Multiple Choice

Which of the following statements regarding contraction in skeletal and smooth muscle is TRUE?

• A)In skeletal muscle,calcium initiates contraction by binding to troponin,while in smooth muscle calcium initiates contraction by binding directly to myosin.
• B)In skeletal muscle,calcium ions bind to a regulatory protein on thin filaments;in smooth muscle,calcium ions bind to a regulatory protein on thick filaments.
• C)In skeletal muscle,calcium initiates contraction by binding to myosin light-chain kinase,while in smooth muscle calcium initiates contraction by binding directly to tropomyosin.
• D)In skeletal muscle,calcium initiates contraction by binding to troponin,while in smooth muscle calcium initiates contraction by binding to calmodulin.
• E)All of the choices are true.

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Definitions:

Testator

One who makes a valid will.

Maker Of A Will

Person who creates a legal document that outlines how their property should be distributed upon their death.

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Goods or services that can be used in place of each other with no loss of utility to the consumer.

Perfect Complements

Two goods for which the Marginal Rate of Substitution (MRS) is zero or infinite; the indifference curves are shaped as right angles.