Question

For diffusion to occur, which condition must be met?

A) A concentration gradient must exist.

B) A hypotonic external environment is required.

C) A hypertonic external environment is required.

D) Dynamic equilibrium must exist.

Answer 1

Answer:

A) A concentration gradient must exist.

Explanation:

For diffusion to occur there must be a concentration gradient. Diffusion occurs when particles move from a region of high concentration to a region of lower concentration. Diffusion occurs until there is equal concentration on both sides. Diffusion stops when concentration equilibrium is reached.

Answer 2

Answer:

A)

Explanation:

A concentration gradient must exist.