When Both Muscles of This Pair Are Contracted Simultaneously, They

question 23

Multiple Choice

When both muscles of this pair are contracted simultaneously, they flex the neck forward.

• A)trapezius
• B)sternocleidomastoid
• C)semispinalis
• D)platysma

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Definitions:

Enzyme-reactant Interaction

The specific process by which an enzyme binds to a reactant, or substrate, to catalyze a biochemical reaction.

Lock-and-key Mechanism

A model for enzyme-substrate interaction suggesting that the enzyme and substrate possess specific complementary geometric shapes that fit exactly into one another.

Codexis

A company specializing in the development of enzymes and biocatalytic processes for pharmaceutical and biofuel productions.

Commercial Process

A systematic sequence of activities designed to produce a product or service for the marketplace.