AP BIOLOGY

THE CELL

STRUCTURE AND FUNCTION OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
A
water to move into the cell.
B
water to move out of the cell.
C
solutes to move into the cell.
D
solutes to move out of the cell.
Explanation: 

Detailed explanation-1: -Answer and Explanation: An animal cell that is surrounded by freshwater will burst because the osmotic pressure will cause the cell to burst. The level of solutes inside of the cell is more than those outside of the cell. This will cause water to rush in and they cell will burst.

Detailed explanation-2: -An animal cell contains cytoplasm which has many nutrients and dissolved mineral. Therefore this solution becomes hypertonic to the surrounding water where no minerals or salts are present. Thus outside water is hypotonic to the cytoplasm of the cell. As a result, water moves inside the cell and the cell bursts.

Detailed explanation-3: -Animal cells have only a cell membrane as an outer layer. When the cell is placed in fresh water, there is more osmotic pressure inside the cell so more water will enter in cell and the cell will burst. It is essential for an animal cell is to be in an isotonic solution so that it can maintain its turgidity.

Detailed explanation-4: -Osmotic pressure depends only on temperature and concentration difference across the membrane! from the interior of cells, then the resulting flow of water can cause the cell to shrink or swell and even burst.

Detailed explanation-5: -Osmosis affects plant and animal cells differently because plant and animal cells can tolerate different concentrations of water. In a hypotonic solution, an animal cell will fill with too much water and lyse, or burst open.

There is 1 question to complete.