B1b transport in cells

Question 1

what is the definition of diffusion?

Answer 1

the spreading out of particles in a solution or gas from an area of higher concentration to an area of lower concentration

Question 2

what are the three factors that affect the rate of diffusion?

Answer 2

1. concentration
2. temperature
3. surface area of membrane

Question 3

what is the definition of osmosis?

Answer 3

the diffusion of water from a dilute solution to a concentrated solution

Question 4

give an example of osmosis

Answer 4

plants absorbing water from the soil through root hair cells

Question 5

what is the definition of active transport?

Answer 5

movement of substances from a more dilute solution to a more concentrated solution

Question 6

give an example of active transport