Dissolved Substances Flashcards
(6 cards)
1
Q
How do dissolved substances move in and out of cells?
A
Through cell membranes and by diffusion
2
Q
What is the definition of diffusion?
A
The movement of particles from an area of high concentration to an area of low concentration through a semi permeable membrane
3
Q
What two factors will affect the rate of diffusion?
A
Temperature
Concentration
4
Q
What is a concentration gradient?
A
A difference in concentration between two areas next to each other
5
Q
Name two locations in the body where diffusion is important?
A
Lungs
Small intestine
6
Q
Which important has passes through cell membranes into cells ?
A
Oxygen
