What Is the Primary Function of a Cell Membrane

question 9

Multiple Choice

What is the primary function of a cell membrane?

• A) recognizing other cells as being "like"
• B) controlling the transport of substances into and out of cells
• C) recognizing chemical signals from other cells
• D) cell-cell binding

---

Definitions:

Narcolepsy

A chronic sleep disorder that causes overwhelming daytime drowsiness and sudden attacks of sleep.

Loses Appetite

The reduction or loss of desire to eat, which can be caused by psychological factors, illness, or other conditions.

Reuptake

The process by which neurotransmitters released into the synaptic gap are absorbed back into the presynaptic neuron, terminating the neurotransmitter's action.

Dopamine

A neurotransmitter important for feeling pleasure and regulating mood, motivation, and reward.