QABiology › Nutrients and waste both enter and leave cells through a process called __________.
Q

Nutrients and waste both enter and leave cells through a process called __________.

A. effusion

B. diffusion

C. fusion

D. emulsion

A

Answer: B. diffusion

The areas within and outside a cell are at different concentrations, so any form of transport into and out of them must happen through a system that can overcome this concentration gradient. Diffusion is the movement of particles along a concentration gradient, from a region of higher concentration to that of a lower concentration. Effusion involves the movement of gas through holes, emulsion deals with immiscible liquids, and fusion deals with joining.

3 years ago
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