Cell Bio - Active Transport

Question 1

Define the term “Active Transport”

Answer 1

Active transport is a process that requires energy (from ATP) to move molecules and ions against the concentration gradient

Question 2

Define the term “Passive Transport”

Answer 2

Passive transport is a process that does not require energy to move molecules and ions down the concentration gradient

Question 3

Explain the effect the rate of respiration has on active transport

Answer 3

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 4

Identify what part of the cell membrane carries out active transport

Answer 4

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

Question 5

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

Answer 5

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