Unit 6 Quiz Flashcards Preview

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Flashcards in Unit 6 Quiz Deck (25):
1

Diffusion

movement of molecules from a region of high concentration to a region of lower concentration (can happen through air, solvents, etc)

2

solvent-

liquid

3

solute-

solid particle

4

solution-

solvent + solute

5

water is considered the universal

solvent
but not all things can dissolve in it

6

osmosis

diffusion of water.
Movement of H2O (water) from a high concentration of H2O to a lower concentration of H2O

7

Factors that effect the rate of diffusion

1. temperature- (the warmer it is, the faster something will diffuse)
2. size of molecule- (smaller the molecule, the quicker it will diffuse)

8

Tonicity

comparing solute concentration of one solution to the solute concentration of another solution

9

isotonic

equal

10

hypertonic

more solute

11

hypotonic

less solute

12

Hypertonic Animal Cell

water leaves cell, cell shrinks and shrivels.

Crenate

13

Hypertonic Plant Cell

plasmolyzed

14

Hypotonic Animal Cell

Water goes in cell, cell fills and fills and then explodes

Lyse

15

Hypotonic Plant Cell

Turgid

16

Differentially Permeable
Selectively Permeable
Semi-permeable

.?

17

Membrane made of

phospholipids.

heads are hydrophilic

tails are hydrophobic

18

Can

1. small polar molecules (H2O)
2. hydrophobic molecules

19

Can't

1. large polar molecules
2. ions (charged particles)

20

Selective Permeability testing

glucose
starch
protein
chloride
sulfate

21

Glucose

Reagent= Benedict's

Have to use a third factor (heat) then you get

positive outcome= burnt orange

22

Starch

Reagent= Iodine

Positive Outcome= black

23

Protein

Reagent= Biuret

Positive Outcome= Purple

24

Chloride

Reagent= Silver Nitrate

Positive Outcome= Milky White

25

Sulfate

Reagent= Barium Chloride

Positive Outcome= precipitate (cloudy looking with stuff in it?)