active transport

Question 1

what is active transport

Answer 1

is the movement of dissolved molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration.

Question 2

what is the difference between diffusion and active transport

Answer 2

diffusion particles move down the concentration gradient doesn’t require energy to respire

particles are moved against the concentration gradient does require energy for respiration

Question 3

give active transport examples in animals

Answer 3

small intestine cell lining. The sugar concentration in the lumen is less then the inside of the cell. The sugar cant diffuse but is carried by active transport and once inside they go into the blood stream

Question 4

give an example of active transport example in plants

Answer 4

root hair cell transports ions such as magnesium into the plant from the soil (and need mag because they need to make chlorophyll in the leaves)

the concentration of ions in the soil is lower then the root hair cell so active transport is used to move them in the hair cell and then moves to the xylem