Active transport

Question 1

What is active transport ?

Answer 1

the movement of molecules across a cell membrane from a region of low concentration to a region of high concentration using energy from respiration

Question 2

Substances that are actively transported across the cell membrane are moved through special _ called _ _

Answer 2

proteins
carrier proteins

Question 3

What is a carrier proteins job ?

Answer 3

To move substances into and out of the cell , through the cell membrane

Question 4

give three examples where active transport is used for the uptake of minerals.

Answer 4

1. root hair cells use A.T (active transport) to uptake minerals from the soil
2. villi in the small intestine use A.T to absorb glucose from digested food
3. cells in the kidney tubules use A.T to reabsorb glucose from the tubules back into the blood

Question 5

where does active transport get its energy from?

Answer 5

from respiration in the cells

Question 6

true or false
the carrier protein changes shape to move substances across the cell membrane during active transport

Answer 6

True