*Unit 3 Part 6: Tonicity & Surface Area to Volume Ratio

Question 1

Solvent

Answer 1

Dissolving agent (ex. water)

Question 2

Solute

Answer 2

Substance that is dissolved (ex. Kool aid)

Question 3

If the concentration of solutes is ______ on inside and outside of a cell, water will move across the membrane to _____ the concentrations.

Answer 3

Different, Equalize

Question 4

Contain a high concentration of solute

Answer 4

Hypertonic

Question 5

Contain a low concentration of solute

Answer 5

Hypotonic

Question 6

Contain the same concentration of solute as the cell

Answer 6

Isotonic

Question 7

What happens to a cell put in a hypertonic solution?

Answer 7

Water diffuses out of the cell, causing in to shrink

Question 8

What happens to a cell put in a hypotonic solution?

Answer 8

Water diffuses into the cell, causing it to swell

Question 9

What happens to a cell put in a isotonic solution?

Answer 9

Water diffuses in and out of the cell at the same rate.

Question 10

If a cell increases in size, what will happen to the surface area to volume ratio?

Answer 10

The ratio will decrease

Question 11

What happens if the surface area to volume ratio decreases?

Answer 11

The cell is unable to obtain nutrients or remove wastes

Question 12

Bigger cells= _____ efficient

Answer 12

less

Question 13

Smaller cells= _____ efficient

Answer 13

more

Question 14

How do cells increase surface to volume ratio?

Answer 14

They will divide to stay small or change shape.

Question 15

Hypertonic Solutions

Answer 15

Contain a high concentration of solute

Question 16

Hypotonic Solutions

Answer 16

Contain a low concentration of colute

Question 17

Isotonic Solutions

Answer 17

Contain the same concentration of solute as the cell