Cell Bio - Active Transport

Question 1

Define the terms below
* Active Transport
* Passive Transport

Answer 1

• Process that requires energy (from ATP) to move molecules and ions AGAINST the concentration gradient
• Process that does not require energy to move molecules and ions DOWN the concentration gradient

Question 2

Explain the effect the rate of respiration has on active transport

Answer 2

Because active transport is dependent on ATP, the rate of respiration will affect the rate of active transport e.g. temperature and oxygen avaliability.

Question 3

Identify what part of the cell membrane carries out active transport

Answer 3

It is carried out by proteins in the cell membrane called protein pumps

Question 4

Give an example of what a cell might use active transport for

Answer 4

A cell may use active transport to stop a harmful substance that is at a high concentration outside from building up inside the cell.