for diffusion to occur, which condition must be met? a concentration gradient must exist. a hypotonic…

for diffusion to occur, which condition must be met? a concentration gradient must exist. a hypotonic external environment must exist. a hypertonic external environment must exist. dynamic equilibrium must exist.

for diffusion to occur, which condition must be met? a concentration gradient must exist. a hypotonic external environment must exist. a hypertonic external environment must exist. dynamic equilibrium must exist.

Answer

Brief Explanations:

Diffusion is the movement of substances from an area of higher concentration to an area of lower concentration. A concentration gradient, which is a difference in concentration of a substance across a space, is essential for this movement to occur. Hypotonic or hypertonic environments relate to osmosis in the context of cells and water - movement, and dynamic equilibrium is a state that can be reached after diffusion has occurred, not a requirement for diffusion to start.

Answer:

A. A concentration gradient must exist.