Difference in concentration between two areas.

Movement of molecules from high to low concentration without energy.

Transport across a membrane that requires no energy.

Transport that uses energy to move substances against a gradient.

Basic Microbiology Transport Concepts

Track progress

Control buttons has been changed to "navigation" mode.

1/4

Hide definitions

Gradient: Difference in concentration between two areas.
Diffusion: Movement of molecules from high to low concentration without energy.
Passive transport: Transport across a membrane that requires no energy.
Active transport: Transport that uses energy to move substances against a gradient.

Terms in this set (4)