Active Transport

Question 1

What does active transport do?

Answer 1

Moves substances from a more dilute solution, to a more concreted solution.
AGAINST the concentration gradient

Question 2

What does active transport require?

Answer 2

It requires energy from respiration, from mitochondria

Question 3

What’s the main difference between diffusion, and active transport ?

Answer 3

Diffusion moves particles down a concentration gradient,
but active transport moves particles against a contraction gradient

Question 4

Lumen example ?

Answer 4

The lumen has glucose, the concentration of glucose in the lumen is lower than in cells.
However the glucose still needs to go into the cells.
It does this via active transport
The glucose then goes from the cells into the blood stream.
It uses energy from mitochondria for this

Question 5

Root hair cells example?

Answer 5

The root hair cells need magnesium, but the concentration of magnesium is higher on the inside than the outside
But the root hair cells still need the magnesium
So it goes into the hair cells via active transport
The magnesium then goes up the plant via the Xylem
It requires energy from mitochondria