Membranes & Movement of Molecules

Question 1

When diffused which statement best describes the motion of the dye molecules in the water?

The dye molecules:
a) move in a directed way from high to low concentration.
b) move randomly through collisions in no particular direction.
c) stay close to other dye molecules as they move through the water.

Answer 1

b) move randomly through collisions in no particular direction.

Question 2

Which given temperature would a molecule move fastest in?

a) low
b) medium
c) high

Answer 2

c) high

Question 3

Based on its mass what molecule would diffuse at the fastest rate:

a) low molecule mass
b) medium molecule mass
c) high molecule mass

Answer 3

a) low molecule mass