Generally, 'First Messengers' Are the Chemicals to Make Contact with a Cell's

question 37

Multiple Choice

Generally, 'first messengers' are the chemicals to make contact with a cell's receptor first. Which of the following are first messengers?

• A) Hormones.
• B) Neurotransmitters.
• C) A and B.
• D) Neither A or B.

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Definitions:

Hemodialysis

A medical procedure that filters waste and excess fluids from the blood when the kidneys are not functioning properly.

Osmosis

A process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.

Diffusion

The process by which molecules spread from areas of high concentration to areas of low concentration until there is an even distribution.

Healthy Bowel Elimination

The process of passing waste through and out of the bowel in a manner considered normal and healthy.