Osmolarity and tonicity

Question 1

Describes the total number of solutes in a solution

Answer 1

Osmolarity and tonicity

Question 2

The osmotic effect of a solute on a cell

Answer 2

Osmolarity and Tonicity

Question 3

Two fluids may have equal _______, but different _________

Answer 3

Osmolarity
tonicity

Question 4

A solution that does not cause osmotic flow of water in or out of a cell

Answer 4

Isotonic (iso- = same, tonos = tension)

Question 5

Has less solutes and loses water through osmosis

Answer 5

Hypotonic (hypo- = below)

Question 6

Has more solutes and gains water by osmosis

Answer 6

Hypertonic (hyper- = above)

Question 7

A cell in a hypotonic solution:

Answer 7

▪Gains water
▪Ruptures (hemolysis of red blood cells)

Question 8

A cell in a hypertonic solution:

Answer 8

▪Loses water
▪Shrinks (crenation of red blood cells

Question 9

In a isotonic saline solution

Answer 9

No osmotic flow occurs, and the red blood cells appear normal

Question 10

In a hypotonic solution

Answer 10

The water flow into the cell. The swelling may continue until the plasma membrane ruptures or lyses

Question 11

In a hypertonic solution

Answer 11

Water moves out of the cell. The red blood cells shrivel and become crenated