Active Transport

Question 1

A cell uses transport protein to move a substance against its concentration gradient—from an area of lower
concentration to an area of higher concentration.

Answer 1

Active Transport

Question 2

Involves the use of carrier proteins (called protein pumps due to their use of energy)

Answer 2

Active Transport

Question 3

Compared to PT, Active Transport goes from?

Answer 3

Low to High concentrations
Opposite of the concentration gradient

Question 4

How are carrier proteins used?

Answer 4

• A specific solute will bind to the protein pump
• The hydrolysis of ATP (to ADP + Pi) causes a conformational change
• The solute molecule is consequently translocated across the membrane

Question 5

Energy may be generated

Answer 5

PAT (Primary Active Transport)
SAT (Secondary Active Transport)

Question 6

Direct Hydrolysis of ATP

Answer 6

PAT

Question 7

Idirectly coupling transport with another molecule

Answer 7

SAT