When a Neuron Is at Rest, What Maintains the High

question 39

Multiple Choice

When a neuron is at rest, what maintains the high concentration gradients of potassium ions inside the cell and sodium ions outside the cell?

• A) diffusion
• B) osmosis
• C) active transport
• D) ion channels

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Definitions:

Polymerase Chain Reaction

A laboratory technique used to amplify DNA segments, enabling detailed analysis and study of genetic material.

DNA Polymerase

DNA Polymerase is an enzyme that synthesizes DNA molecules from deoxyribonucleotides, the building blocks of DNA, playing a critical role in DNA replication and repair.

Enzyme

Protein or RNA that speeds up a reaction without being changed by it.

Reverse Transcriptase

An enzyme that synthesizes DNA from an RNA template, essential in the replication of retroviruses.