B1 cell transport definitions Flashcards
1
Q
active transport
A
the movement of particles across the concentration gradient, from a dilute to more concentrated solution. requires more energy from more respiration from more mitochondria, and requires transport proteins
2
Q
alveoli
A
in the lungs increase the rate of diffusion by having a large surface area, one cell thick, moist
3
Q
concentration
A
the strength of something in a liquid
4
Q
diffusion
A
the movement of particles from an area of high concentration to an area of low concentration
5
Q
dilute
A
a weaker substance
6
Q
osmosis
A
the diffusion of water from a dilute (hypotonic0 to a concentrated (hypertonic) solution through a partially permeable membrane
7
Q
passive process
A
process where energy is not required eg diffusion and osmosis
