Q: Which equation correctly represents the relationship between the percentage of water and solute in a solution?

$$\%\,\text{water} + \%\,\text{solute} = 100\%$$

Question 1

A cell with an internal solution of 90% water is placed in an external environment containing 80% water. What type of environment is this, and what will happen to the cell?

Accepted Answer

Hypertonic; water will move out of the cell causing it to shrink.

Question 2

Which of the following best describes a concentrated solution?

Accepted Answer

A solution with a low percentage of water and a high percentage of solute.

Question 3

If a bacterial cell is placed in distilled water (approximately 100% water), what is the most likely outcome if the cell wall is damaged?

Accepted Answer

The cell will explode due to osmotic lysis.

Question 4

Which equation correctly represents the relationship between the percentage of water and solute in a solution?

Accepted Answer

$$\%\,	ext{water} + \%\,	ext{solute} = 100\%$$

Question 5

A cell is exposed to an environment with the same percentage of water as its internal environment. What is this environment called, and what is the effect on the cell?

Accepted Answer

Isotonic; the cell will neither gain nor lose water.

Question 6

Which of the following is a real-world example of a hypertonic environment?

Accepted Answer

The Dead Sea

Question 7

What is the primary function of the cell wall in bacteria and plants regarding osmosis?

Accepted Answer

To prevent the cell from blowing up in a hypotonic environment.

Question 8

A cell is placed in a solution with 95% water, while its internal environment is 90% water. What will happen to the cell?

Accepted Answer

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

Question 9

Which term describes a solution with a relatively low percentage of solute and a high percentage of water?

Accepted Answer

Dilute

Question 10

If a cell is placed in a hypertonic environment, which process is most likely to occur?

Accepted Answer

Plasmolysis

Question 11

Which of the following statements about osmosis is correct?

Accepted Answer

Water moves from an area of higher percentage to an area of lower percentage.

Question 12

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

Accepted Answer

The cells will swell and may undergo osmotic lysis.

Question 13

Which of the following best explains why saline solutions used for injections are isotonic?

Accepted Answer

To prevent cells from losing or gaining water.

Question 14

Which environment would cause the greatest amount of water to leave a cell with 90% water?

Accepted Answer

An environment with 60% water

Question 15

What is the effect of exposing a cell to an isotonic environment?

Accepted Answer

There is no net movement of water; the cell remains unchanged.

Question 16

Which of the following is a correct description of a hypotonic environment?

Accepted Answer

Less solute and more water than the cell

Question 17

If a cell is placed in a solution where $$\%\,	ext{water}_{	ext{outside}} = \%\,	ext{water}_{	ext{inside}}$$, what is the expected direction of water movement?

Accepted Answer

There will be no net movement of water.

Question 18

Which bacterial cell type is more vulnerable to drugs and antibiotics due to its cell wall structure?

Accepted Answer

Gram-positive bacteria

Question 19

A cell is placed in a solution with a lower percentage of water than its internal environment. What is the most likely outcome?

Accepted Answer

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

Question 20

Which of the following scenarios would most likely result in plasmolysis?

Accepted Answer

A bacterial cell placed in a hypertonic saline solution

Osmosis and Its Effects on Cells

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