1. What is the definition of osmosis?

A) The net movement of water across a semipermeable

membrane from an area of higher solute concentration to

an area of lower solute concentration.

B) The net movement of water across a semipermeable

membrane from an area of lower solute concentration to an

area of higher solute concentration.

C) The net movement of solutes across a semipermeable

membrane from an area of higher solute concentration to

an area of lower solute concentration.

D) The net movement of solutes across a semipermeable

membrane from an area of lower solute concentration to an

area of higher solute concentration.

Answer: B

Rationale: This is the formal definition of osmosis

according to Khan Academy.

2. What is the difference between osmolarity and tonicity?

A) Osmolarity is the total concentration of solutes in a

solution, while tonicity is the relative concentration of

solutes in a solution compared to another solution.

B) Osmolarity is the relative concentration of solutes in a

solution compared to another solution, while tonicity is the

total concentration of solutes in a solution.

C) Osmolarity is the measure of how much water can cross

a semipermeable membrane, while tonicity is the measure

of how much solutes can cross a semipermeable

membrane.

D) Osmolarity is the measure of how much solutes can