The Interaction Between Actin and Myosin in Smooth Muscle Requires

question 169

Multiple Choice

The interaction between actin and myosin in smooth muscle requires

• A) the activation of troponin, which stimulates myosin light -chain kinase to phosphorylate myosin light chain, allowing myosin to bind with actin.
• B) the interaction between calcium and troponin to expose the myosin binding site on the actin molecule.
• C) that the calcium -calmodulin complex activates myosin light -chain kinase, which phosphorylates myosin thereby allowing it to bind with actin.
• D) the tropomyosin must be moved out of the way by troponin before myosin can bind to actin.
• E) that the calcium -calmodulin complex directly phosphorylates myosin light chain, allowing myosin to bind to actin.

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Definitions:

Automotive

Pertaining to the design, production, and operation of motor vehicles.

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A classification for trucks and commercial vehicles based on weight, design, and usage, typically for less demanding transportation tasks.

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A communications network protocol used in heavy-duty vehicles, allowing electronic control units (ECUs) to communicate.

SAE J1939 Data Bus

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