Chapter 3 Flashcards
Movement into and out of cells (3 cards)
1
Q
Active transport
A
The movement of particles through a cell membrane from a region of their lower concentration to a region of higher concentration (i.e. against a concentration gradient), using energy from respiration
2
Q
Diffusion
A
The net movement of particles from a region of their higher concentration to a region of lower concentration (i.e. down a concentration gradient), as a result of their random movement
3
Q
Osmosis
A
The net movement of water molecules from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution) through a partially permeable membrane
