Action Potentials

question 399

Multiple Choice

Action potentials:

• A)travel swiftly down axons with myelin and more slowly in axons without myelin.
• B)travel swiftly down axons without myelin and more slowly in axons with myelin.
• C)travel swiftly down dendrites with myelin and more slowly in dendrites without myelin.
• D)travel swiftly down dendrites without myelin and more slowly in dendrites with myelin.

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Definitions:

DNA Replication

The process by which DNA is duplicated; ordinarily a semiconservative process in which a double helix gives rise to two double helices, each with an "old" strand and a newly synthesized strand.

Radioactive Isotopes

Atoms of the same element that have different numbers of neutrons in their nuclei, causing them to be unstable and decay, releasing radiation.

Phosphate Groups

Phosphate groups are chemical groups containing phosphorus and oxygen; they play a key role in energy transfer and molecular signaling in cells.

Covalent Bond

A chemical bond involving the sharing of electron pairs between atoms, leading to the formation of a stable molecule.