Lesson 2.5

Question 1

Fluid mosaic model:

Answer 1

integral, peripheral, and time

Question 2

Lipids:

Answer 2

phospholipids
cholesterol
sphingolipids

Question 3

Chemical components:

Answer 3

lipids
proteins
carbohydrates

Question 4

Proteins:

Answer 4

integral vs. peripheral: do work required of membrane

Question 5

carbohydrates:

Answer 5

glycoproteins

glycolipids

Question 6

membranes control

Answer 6

movement

Question 7

Passive diffusion:

Answer 7

1. water, gases, small lipophilic organic
2. large molecules and charged compounds do not cross
3. does not require proteins - Osmosis

Question 8

Mediated transport:

Answer 8

by carrier proteins and requires proteins

Question 9

Passive mediated transport:

Answer 9

facilitated diffusion and no energy required, uses gradient

Question 10

Carriers:

Answer 10

carriers/transportation: protein that makes it happen

Question 11

Protein channels:

Answer 11

passageway

Question 12

Active mediated transport:

Answer 12

requires energy ATP and proteins

Question 13

Pumps:

Answer 13

movement of charged species against the gradient

Ex. sodium-potassium ATPAse pump

Question 14

cell to cell communication:

Answer 14

glycolipids + glycoproteins provide “touch points” between neighboring cells -> stops replicate cation in normal cells