Active Transport

Question 1

What is active transport?

Answer 1

Active transport is the movement of particles from an area of lower concentration to an area of higher concentration, against their concentration gradient. It requires energy from respiration.

Question 2

How do root hairs utilize active transport?

Answer 2

Root hairs take up water and mineral ions from the soil, which are usually in higher concentrations in the cells, requiring energy from respiration to work.

Question 3

What substances are moved in the gut via active transport?

Answer 3

Substances such as glucose and amino acids from food are moved from the gut into the bloodstream, sometimes against a concentration gradient.

Question 4

Why is active transport necessary in the gut?

Answer 4

Active transport is required to move sugar to the blood when there is a lower concentration of sugar molecules in the gut than in the blood.