Topic 1b - transport in cells ( 3. active transport )

Question 1

what is active transport?

Answer 1

movement of particles against the concentration gradient, area of lower to area of higher concentration, using transferred energy during respiration.

Question 2

how do root hairs absorb minerals and ions

Answer 2

active transport

Question 3

explain how root hairs use active transport to absorb minerals

Answer 3

the concentration of minerals is usually higher in the root hair than the soil therefore diffusion cannot be used. plants need these minerals to grow. active transport need respiration to work. active transport allows plant to absorb minerals from a dilute solution against the concentration gradient.

Question 4

another example of where active transport is used

Answer 4

in the gut

Question 5

when is active transport used in the gut

Answer 5

when the gut needs to absorb nutrients into the blood however the blood has more nutrients in it than the concentration. of nutrients in the gut

Question 6

why does the gut need to go through active transport

Answer 6

to stop us from starving

Question 7

where does the gut get the energy from

Answer 7

glucose can be taken into the blood stream when its concentration is already higher than in the gut. glucose can be transported to cells where it is used for respiration.