Q: Which of the following equations correctly represents the calculation for the concentration of a solution?

$$C = \frac{\text{solute mass}}{\text{total solution volume}}$$

Question 1

Which of the following best describes osmosis?

Accepted Answer

The movement of water molecules from an area of low solute concentration to high solute concentration through a selectively permeable membrane.

Question 2

A red blood cell is placed in a solution and begins to swell until it bursts. Which type of solution was the cell placed in?

Accepted Answer

Hypotonic solution

Question 3

Which of the following statements about hypertonic solutions is correct?

Accepted Answer

A cell placed in a hypertonic solution will lose water and shrink.

Question 4

If a plant cell is placed in an isotonic solution, what will happen to the cell's volume?

Accepted Answer

It will remain the same.

Question 5

Which of the following equations correctly represents the calculation for the concentration of a solution?

Accepted Answer

$$C = \frac{	ext{solute mass}}{	ext{total solution volume}}$$

Question 6

A 700 mL solution contains 36.5 g of solute. What is the concentration of the solution in $$	ext{g/mL}$$?

Accepted Answer

$$0.052 \ 	ext{g/mL}$$

Question 7

Which of the following best explains why a freshwater fish placed in saltwater will lose mass?

Accepted Answer

Saltwater is hypertonic to the fish's cells, causing water to leave the cells.

Question 8

Which of the following scenarios best illustrates passive transport?

Accepted Answer

Water moving through a selectively permeable membrane from high to low concentration.

Question 9

A solution contains 1220 g of solute and 700 g of solvent. What is the total mass of the solution?

Accepted Answer

$$1920 \ 	ext{g}$$

Question 10

Which of the following best describes an isotonic solution?

Accepted Answer

A solution with the same solute concentration as the cell.

Question 11

A cell is placed in a solution and there is no net movement of water across the membrane. What can you conclude about the solution?

Accepted Answer

The solution is isotonic to the cell.

Question 12

Which of the following is NOT a characteristic of passive transport?

Accepted Answer

It requires energy in the form of ATP.

Question 13

If a cell is placed in a solution and water moves into the cell, causing it to swell, what is the tonicity of the solution relative to the cell?

Accepted Answer

Hypotonic

Question 14

Which of the following best describes the net movement of water in osmosis?

Accepted Answer

From an area of high water concentration to low water concentration

Question 15

A hospital patient is accidentally given an intravenous solution that is hypertonic to their blood plasma. What is the most likely effect on their red blood cells?

Accepted Answer

The cells will shrink due to water loss.

Question 16

Which of the following is the correct definition of a solute?

Accepted Answer

The substance that is dissolved in a solvent.

Question 17

A cell with an internal solute concentration of $$0.9\% is $$placed in a solution with a solute concentration of $$0.5\%. $$What will happen to the cell?

Accepted Answer

Water will move into the cell, causing it to swell.

Question 18

Which of the following best explains why plant cells do not burst when placed in a hypotonic solution, unlike animal cells?

Accepted Answer

Plant cells have a rigid cell wall that prevents excessive expansion.

Question 19

A solution is made by dissolving $$63.54 \ 	ext{g} of $$solute in $$1920 \ 	ext{mL} of $$solvent. What is the concentration in $$	ext{g/mL}$$?

Accepted Answer

$$0.033 \ 	ext{g/mL}$$

Question 20

Which of the following is a real-life example of osmosis?

Accepted Answer

Water moving into plant roots from the soil.

Osmosis and Solution Concentration: Study Notes for General Biology

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