AP BIOLOGY

LABORATORY REVIEW

DIFFUSION AND OSMOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If a person drank salty water their cells would
A
shrink
B
expand
C
stay the same
D
unknown
Explanation: 

Detailed explanation-1: -Mineral salts will break the cell wall, causing the cells to shrink.

Detailed explanation-2: -A cell place in salty solution would loose water as water will move from cell to surrounding hypertonic medium by the process of osmosis causing the cell to shrivel up.

Detailed explanation-3: -If there’s too high a concentration of salt coming in, the cells force out extra water to maintain balance, basically wringing themselves out. They stop functioning, you stop functioning.

Detailed explanation-4: -Water will diffuse from a higher water concentration outside the cell to a lower water concentration inside the cell. Red blood cells placed in a solution with a lower water concentration compared to their contents (eg 1.7 per cent salt solution) will lose water by osmosis and shrink.

There is 1 question to complete.