BOTANY LAB: OSMOSIS

Question 1

The movement of molecules from a region of high concentration to a region of low concentration

Answer 1

DIFFUSION

Question 2

FACTORS AFFECTING RATE OF DIFFUSION

Answer 2

1. Temperature of environment
2. Density of the diffusing molecule
3. Medium of diffusion
4. Concentration gradient

Question 3

FACTORS AFFECTING RATE OF DIFFUSION
- Increase in temperature increase the average kinetic energy of the particles, thus increasing their velocity

Answer 3

TEMPERATURE OF THE ENVIRONMENT

Question 4

FACTORS AFFECTING RATE OF DIFFUSION
- At a certain temperature, lighter atoms, such as hydrogen, carbon, oxygen, and nitrogen travel faster and are more mobile than larger atoms such as copper or iron.
- Lighter atoms diffuse faster than heavier materials

Answer 4

DENSITY OF TYE DIFFUSING MOLECULE

Question 5

FACTORS AFFECTING RATE OF DIFFUSION
- A given particle has to diffuse through is very dense or viscous, then the particle will have a harder time diffusing through it. so, the rate of diffusion will be lower.
- Medium is less dense or less viscous, then the particles will be able to move more quickly and will diffuse faster.

Answer 5

MEDIUM OF DIFFUSION

Question 6

FACTORS AFFECTING RATE OF DIFFUSION
- Pertains to the difference in concentration either side of the membrane
- Molecules tend to move down the concentration gradient, toward areas of lesser concentration

The greater gradient; the greater the rate of diffusion

Answer 6

CONCENTRATION GRADIENT

Question 7

The diffusion of water through a semi-permeable membrane

Answer 7

OSMOSIS

Question 8

Water molecules will move in the direction where there is a high concentration of solute and low concentration of water

Answer 8

OSMOSIS

Question 9

A measure of the effective osmotic pressure gradient

may be Hypertonic, Isotonic, & Hypotonic

Answer 9

TONICITY

Question 10

The relative concentration of solutions that determine the direction and extent of diffusion

Answer 10

TONICITY

Question 11

The solute concentration of the environment is greater than that of the cells

Answer 11

HYPERTONIC

Question 12

The solute concentration of cell is equivalent to that of the environment

Answer 12

ISOTONIC

Question 13

The solute concentration of environment is less than that of the cells

Answer 13

HYPOTONIC

Question 14

A process in plant cells where the plasma membrane pulls away from the cell wall due to the loss of water through osmosis

Answer 14

PLASMOLYSIS