Which of the Following Is the Correct Sequence of the Tetrapeptide

question 115

Multiple Choice

Which of the following is the correct sequence of the tetrapeptide that is formed by the following reaction sequence?

• A) Cys-Ala-Phe-Ser
• B) Cys-Phe-Ala-Ser
• C) Ser-Ala-Phe-Cys
• D) Ser-Phe-Ala-Cys
• E) none of these

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Definitions:

Sliding Filament Mechanism

The process by which muscles contract, involving the sliding of actin and myosin filaments past each other.

Crossbridge

A structure formed when myosin heads in muscle fibers attach to actin filaments during muscle contraction.

Sarcoplasm

The cytoplasm of a muscle cell, containing organelles, including the mitochondria and sarcoplasmic reticulum.

Electromyograph

A diagnostic tool used to measure the electrical activity of muscles during contraction and at rest.