Match These Definitions with the Appropriate Term

question 20

Multiple Choice

Match these definitions with the appropriate term.
-The chromosomal molecule that transfers genetic characteristics by way of coded instructions for the structure of proteins.

• A)DNA
• B)chromosome
• C)gene
• D)genome
• E)genetic marker

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Definitions:

Motor Units

A motor unit consists of a single motor neuron and all the muscle fibers it innervates, essential for muscle contraction.

All Or None

A principle stating that a neuron either fires with a full response or does not fire at all, depending on stimulus strength.

Contraction

The process in which a muscle becomes shorter and tighter, producing movement or exerting force.

Single Muscle Contraction

The process by which a muscle fiber receives a nerve impulse and momentarily contracts or shortens.