Diffusion

Question 0

Direction of diffusion relies on what

Answer 0

Gradient of concentration, heat, and pressure

Question 1

Diffusion

Answer 1

Passive directional movement do molecules

Question 2

Which way do molecules diffuse

Answer 2

High concentration to low concentration

Question 3

Rate of diffusion relies on

Answer 3

Steepness of gradient,

Size, polarity, solubility

Question 4

Best predictor of substance’s direction of diffusion

Answer 4

Concentration
Why
Temperature and pressure also affect diffusion but are relatively constant

Question 5

Selectively permeable

Answer 5

Cell membrane allow some molecules to pass and some not

Question 6

Membrane permeability to a solute depends on solutions

Answer 6

Size, charge(ions), polarity, and lipid solubility

Question 7

Polar molecules

Answer 7

Positively charged and negatively charged areas

Question 8

Nonpolar molecules

Answer 8

Have no local areas of charge

Question 9

What molecules pass through lipid core membrane easily

Answer 9

Small, uncharged, nonpolar, lipid soluble molecules

Question 10

Dialysis

Answer 10

Separation of dissolved substances by means of their unequal diffusion through a differently permeable membrane

Question 11

Osmosis

Answer 11

Diffusion of water across a differently permeable membrane

Always refers to water

Question 12

Solution
Solvent
Solute

Answer 12

Liquid mixture of 2 or more molecules
Fluid that dissolves substances
Substance dissolved in solution

Question 13

Hypotonic

Answer 13

Water moves IN, cell BURSTS or is contained by cell wall

Solution with a LOW concentration of solutes

Question 14

Hypertonic

Answer 14

Cell SHRINKS, water moves out

Solution with HIGH concentrations of solutes

Question 15

Isotonic

Answer 15

Two solution with equal concentrations of solutes

Question 16

Water potential

Answer 16

Water will flow from HIGH water potential to LOW water potential
HIGH water concentrations( low solute concentration ) and high pressure increase water potential

Question 17

Decrease in water potential

Answer 17

High solutes and low pressure

Question 18

Lower water potential in leaves because

Answer 18

Loss of water to atmosphere
water flows from roots(high water potential)
To leaves(low water potential)

Question 19

Lysis

Answer 19

Destruction of a cell by the influx of water

Question 20

Hemolysis

Answer 20

Animal cells burst because increase in water pressure, don’t have cell walls

Question 21

Plasmolysis

Answer 21

Shrinking of the cytoplasm of a plant cell in response to diffusion of water out of a cell and into hypertonic solution
Cellular membrane pulls away from cell wall