Osmosis/equations/membrane

Question 1

Phospholipid

Answer 1

The main structural element of the cell membrane, made from phosphate and Lipid(fat)

Question 2

Hydrophobic

Answer 2

Repelled or hates water.

Question 3

Hydrophilic

Answer 3

Is attracted to water

Question 4

Concentration Gradient

Answer 4

The level of concentration of a particular molecule or particle with in a cell

Question 5

Surface Area

Answer 5

Total area on the outside of a cell.

B x W x (No. of sides)

Question 6

Volume

Answer 6

The amount of space inside a cell

B x H x W

Question 7

Passive

Answer 7

Does not use energy

Question 8

Active Transport

Answer 8

Uses energy to move larger substances though channel proteins

Question 9

Diffusion

Answer 9

Molecules moving from a high concentration to a low in their container

Question 10

Facilitated Diffusion

Answer 10

The passive movement of substances through integral proteins.

Question 11

Osmosis

Answer 11

Water molecules diffusing through a semi-permeable membrane from a high concentration to a low, (Hypo = water moving in), (Hyper = water moving out), (Isotonic = equal)

Question 12

Semi-permeable

Answer 12

Only allows certain things through.

Question 13

Exocytosis

Answer 13

Substances leaving the cell in a vesicle

Question 14

Endocytosis

Answer 14

Substances entering the cell in a vesicle

Question 15

Intergral Protein

Answer 15

A big chunk of protein embedded into the membrane to allow for substances in a vesicle to be let in and out in an active process.

Question 16

Cholesterol

Answer 16

Chunks in the Phosphid-Bilayer that helps the structure of the membrane remain more solid.