The Biological Clock Controlling Circadian Rhythms Must Ultimately

question 24

Multiple Choice

The biological clock controlling circadian rhythms must ultimately

• A) depend on environmental cues.
• B) affect gene transcription.
• C) stabilize on a 24-hour cycle.
• D) speed up or slow down with increasing or decreasing temperature.
• E) do all of the above.

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Definitions:

Oligodendrocytes

Specialized glial cells in the central nervous system that myelinate axons, providing insulation and increasing the speed of electrical impulses.

Astrocytes

Star-shaped glial cells in the brain and spinal cord, crucial for neuron function and repair.

Epithelial Cells

Cells that line the surfaces of the body, such as the skin, blood vessels, urinary tract, and organs.

Cell Differentiation

The process through which a cell changes from one cell type to another, usually becoming more specialized in its function.