When a Neuron Is at Its "Resting Potential," Which of the Following

question 4

Multiple Choice

When a neuron is at its "resting potential," which of the following is true about the concentration of sodium ions?

• A)Sodium ions have a greater concentration inside the neuron's cell membrane.
• B)Sodium ions have a greater concentration outside the neuron's cell membrane.
• C)The sodium concentration is the same outside and inside the neuron's cell membrane.

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Definitions:

Regulator Gene

A gene involved in controlling the expression of one or more other genes, often by producing a protein that can enhance or suppress gene activity.

Transcription

The process of converting DNA into RNA, specifically messenger RNA (mRNA), which then directs protein synthesis.

Repressor Molecule

A protein that inhibits gene expression by binding to the operator or associated silencers.

Operator

In genetics, a segment of DNA to which a repressor protein binds, controlling the transcription of nearby genes.