General properties of diffusion

Question 1

Diffusion uses this energy of molecular movement and doesn’t require an outside energy source

Answer 1

kinetic energy

Question 2

molecules diffuse

Answer 2

from an area of higher concentration to an area of lower concentration

Question 3

Diffusion continues until

Answer 3

equilibrium is reached. Molecular movement however, after equilibrium has been reached

Question 4

Diffusion is faster (type of concentration size, temp, distance, molecular size)

Answer 4

-along higher concentration gradients
-over shorter distances
-at higher tempertatures
- for smaller molecules

Question 5

diffusion can take place in an

Answer 5

open system or across a partition that separates two systems

Question 6

The rate of diffusion through a membrane is faster if

Answer 6

-the membrane’s surface area is larger
-the membrane is thinner
-the concentration gradient is larger
-the membrane is more permeable to the molecule

Question 7

Membrane permeability to a molecule depends on

Answer 7

the molecule’s lipid solubility
the molecule’s size
the lipid composition of the membrane