Variables That Naturally Exist in the Environment That May Have

question 6

Multiple Choice

Variables that naturally exist in the environment that may have some systematic effect on the dependent variable in an experiment are referred to as _____.

• A) latent variables
• B) control variables
• C) extraneous variables
• D) third variables

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Definitions:

Synaptic Cleft

The small gap between neurons at a synapse, across which neurotransmitters move to transmit electrical signals.

Sodium Channels

Protein channels located in cell membranes that allow the passage of sodium ions in and out of the cell, playing a crucial role in generating electrical signals in neurons and muscle cells.

Motor End Plate

A region of muscle fiber membrane that receives signals from nerves, triggering muscle contraction.

Presynaptic Membrane

The part of the nerve cell that is situated at the synapse and releases neurotransmitters in response to a nerve impulse.