3.4 Active Transport

Question 1

Active transport is movement

Answer 1

• against the conc. gradient
• requires energy (ATP)

Question 2

Enzymes embedded in the membrane aka

Answer 2

Integral membrane proteins, move things opp. of conc. gradient

Question 3

Sodium Potassium pump (Na+, K+ ATPase)

Answer 3

-present in the plasma membrane of every animal cell
- critical for physio funct.
- first gene expressed as an embryo

Question 4

The sodium potassium pump does what

Answer 4

• pumps sodium out of cell (into higher conc.)
• pumps potassium in the cell (into higher conc.)

Question 5

ATP becomes hydrolyzed to form

Answer 5

ADP

Question 6

Primary active transport

Answer 6

Moves things against conc. gradient (low to high) (ex. Na out, K in, ATP to ADP)

Question 7

Secondary active transport (Facilitated diffusion ex)

Answer 7

Na back in escorts glucose (glut4)

Question 8

Endocytosis involves

Answer 8

Bilayer folds around something and brings it in as a vesicle