C2 Passive + active

Question 1

Diffusion

Answer 1

Small/non polar molecules move directly across the membrane (high to low)

Question 2

Facilitated diffusion (Channel mediated)

Answer 2

Large/polar molecules + charged ions, uses ion channel proteins

Question 3

Facilitated diffusion (carrier-mediated)

Answer 3

Shape + chemically specific polar molecules uses carrier proteins

Question 4

Active transport

Answer 4

Molecules or ions move across cell membrane with energy (low to high)
Ex. Using carrier proteins requiring ATP for larger molecules