Which of the Following Statements Is True Regarding Skeletal-Muscle Contraction

question 56

Multiple Choice

Which of the following statements is true regarding skeletal-muscle contraction?

• A)The cross-bridge cycle refers to the sequence of events between the time an individual cross bridge binds to a thin filament at the start of a muscle contraction and the time the cross bridge releases the filament at the end of the contraction
• B)Excitation-contraction coupling refers to the binding of energized myosin to actin
• C)Binding of myosin to actin cannot take place in the absence of calcium ion
• D)A single twitch in skeletal muscle lasts about as long as the action potential that caused it
• E)All of the choices are true

---

Definitions:

Enucleate Egg Cell

An egg cell that has had its nucleus removed, used in cloning processes and certain reproductive technologies.

Fuse Mammary Cell

A process involving the combination of mammary cells, potentially for scientific research, including cloning or production of pharmaceuticals.

Enucleate Egg Cell

An egg cell that has had its nucleus removed, used in certain reproductive technologies and research applications.

Transfer To Host

The process by which a parasite, pathogen, or other organism is passed from one host to another.