$$\text{\% solvent} + \text{\% solute} = 100\%$$

Question 1

Which of the following best describes osmosis?

Accepted Answer

The diffusion of water from an area of higher water concentration to an area of lower water concentration across a membrane.

Question 2

A cell contains 90% water and 10% solute. It is placed in a solution containing 80% water and 20% solute. What will happen to the cell?

Accepted Answer

Water will move out of the cell, causing it to shrink.

Question 3

Which equation correctly represents the relationship between solvent and solute percentages in a solution?

Accepted Answer

$$	ext{\% solvent} + 	ext{\% solute} = 100\%$$

Question 4

Which of the following is an example of a hypertonic environment for a typical cell?

Accepted Answer

A solution with 60% water and 40% solute.

Question 5

If a patient is administered an isotonic solution, what is the expected effect on their cells?

Accepted Answer

Cells will maintain their normal shape and size.

Question 6

Which real-life scenario is most likely to cause cells to lose water due to osmosis?

Accepted Answer

Swimming in the ocean, where the water is salty.

Question 7

A plant cell is placed in a hypotonic solution. What is the most likely outcome?

Accepted Answer

Water will enter the cell, causing it to swell.

Question 8

Which of the following statements about osmosis is FALSE?

Accepted Answer

Osmosis involves the movement of solute across a membrane.

Question 9

A cell is exposed to a solution with the same percentage of water as inside the cell. What type of environment is this?

Accepted Answer

Isotonic

Question 10

Which of the following best explains why meat is preserved with salt?

Accepted Answer

Salt creates a hypertonic environment, causing bacteria to lose water and dry out.

Question 11

A cell with 90% water is placed in a solution with 95% water. What will happen?

Accepted Answer

Water will move into the cell.

Question 12

Which of the following is NOT a potential danger to cells caused by osmosis?

Accepted Answer

Cells maintaining their normal water balance.

Question 13

In a water drinking contest, a person consumes excessive amounts of water rapidly. What is the most likely effect on their cells?

Accepted Answer

Cells will gain water and may burst.

Question 14

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

Accepted Answer

The substance dissolved in the solvent.

Question 15

If a cell is placed in a hypertonic solution, which direction will water move?

Accepted Answer

Out of the cell

Question 16

Which scenario would justify administering a hypertonic solution to a patient?

Accepted Answer

To reduce edema by drawing water out of cells.

Question 17

Which of the following is a misconception about fluids relevant to osmosis?

Accepted Answer

Fluids are pure water.

Question 18

A cell is placed in a solution where the percentage of water is lower than inside the cell. What is the term for this environment?

Accepted Answer

Hypertonic

Question 19

Which of the following best describes the movement of water during osmosis?

Accepted Answer

Water moves from the solution with more water to the solution with less water.

Question 20

Which practical application is safest for patients to avoid cell damage?

Accepted Answer

Administering an isotonic solution.

Osmosis and Its Effects on Cells

Study Guide - Practice Questions