1.13 - Active Transport

Question 1

What is diffusion

Answer 1

the process by which substances move down from a region of higher concentration to a region of lower concentration

Question 2

Is diffusion not passive or passive

Answer 2

Diffusion is passive- it doesnt require any energy from the cell

Question 3

Active transport is

Answer 3

movement of molecules against their concentration gradient

Question 4

Is active transport passive or not

Answer 4

active transport its not passive it requires energy from the cell

Question 5

Where does active transport always take place

Answer 5

always takes place across a membrane

Question 6

What does active transport always require

Answer 6

special proteins to transfer the molecule from 1 side to the other

Question 7

Where does energy for active transport come from

Answer 7

cellular respiration

Question 8

Whats an example of where active transport is used

Answer 8

Root hair cells have a protrusion- this helps to absorb water and minerals

The problem is the minerals plants need - mg for chlorophyll and nitrates for proteins- are at a higher concentration inside the cell than they are outside in the soil

Therefore cannot be absorbed by diffusion

They need to be absorbed by active transport