Membrane Transport

Question 1

How do substances move through the membrane?

Answer 1

passive transport,active transport,simple diffusion, facilitated diffusion, osmosis,

Question 2

Passive Transport

Answer 2

move solutes WITH their concentration gradient (high to low concentration).
no energy required
ex. simple diffusion, facilitated diffusion, osmosis

Question 3

Active Transport

Answer 3

can move solutes AGAINST their concentration
energy is required (ATP)
ex. exocytosis, endocytosis

Question 4

Simple Diffusion

Answer 4

small, uncharged solutes (O2, CO2), lipids

no membrane proteins needed

Question 5

Facilitated Diffusion

Answer 5

large and/or charged solutes (glucose, Na+, etc.)

requires membrane proteins

Question 6

Osmosis

Answer 6

diffusion of H2O

simple and facilitated (depending on cell)

Question 7

Endocytosis

Answer 7

membrane folds in to bring material inside the cell in a vesicle

Question 8

Exocytosis

Answer 8

vesicle fuses with the membrane to release material outside the cell

Question 9

What are three Active Processes?

Answer 9

Active Transport, Endocytosis, and Exocytosis.

Question 10

Selectively Permeable

Answer 10

a membrane that will allow certain molecules or ions to pass through it by diffusion and occasionally specialized facilitated diffusion