Which Best Describes a "Myofibril

question 42

Multiple Choice

Which best describes a "myofibril"?

• A)It is a single skeletal muscle cell.
• B)It is a cylindrical cellular organelle composed of myofilaments.
• C)It is a hollow membranous structure that stores calcium.
• D)It is composed of a single type of protein and forms cross-bridges.
• E)It is a fibrous junction between a muscle cell and a tendon.

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Definitions:

AC Power Supply

A device that provides electrical power in the form of alternating current (AC) to electronic devices and systems.

Energized Circuit

A circuit that is under voltage and capable of providing electrical power to connected devices or equipment.

Extended Periods

Lengthy durations or time frames, often referring to the operation or application of something over a long period.

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A device that opens or closes an electrical circuit based on the speed of the rotating shaft, commonly used in motors.