9.2

Question 1

simple diffusion

Answer 1

high to low concentration, small uncharged molecules can move straight through the membrane

Question 2

facilitated diffusion

Answer 2

high to low concentration, uses proteins to move larger and/or charged molecules through the membrane

Question 3

osmosis

Answer 3

diffusion of water to dilute higher solute concentrations to equalize

Question 4

hypertonic

Answer 4

higher % solute

Question 5

hypotonic

Answer 5

lower % solute

Question 6

isotonic

Answer 6

same % solute

Question 7

active transport

Answer 7

uses energy to move molecules low to high concentration

Question 8

endocytosis

Answer 8

cell membrane moving to grab molecules outside of the cell and turns into a vesicle to transport the molecules

Question 9

exocytosis

Answer 9

vesicles releasing molecules out of the cell

Question 10

phospholipids

Answer 10

molecules that have a hydrophilic head and a hydrophobic tail, clump together to form the cell membrane, cholesterol stabilizes the membrane

Question 11

parts of cell membrane

Answer 11

phospholipids - hydrophilic head, hydrophobic tail
cholesterol - helps stabilize membrane
protein channels - transports larger and/or charged molecules through membrane

Question 12

what’s the importance of surface area:volume for cells

Answer 12

the more surface area a cell has, the more space it has to complete cellular processes that happen in the membrane, but the less volume a cell has, the easier it is for things to be carried from one side to the other or to other places inside the cell. this is why bigger animals don’t have big cells.