AP BIOLOGY

Detailed explanation-1: -When an animal cell is kept in distilled water, the solute concentration inside the cell is more than outside. Water will enter inside the cell due to osmosis.

Detailed explanation-2: -When a plant cell is placed in distilled water it becomes turgid. This is because it gains water from the hypotonic distilled water by a process called osmosis and this causes the plant cell’s cytoplasm to swell up until it presses up firmly against the cell wall.

Detailed explanation-3: -The bag filled with the distilled water will decrease in mass as will the dialysis bag with 0.2M of sucrose. The decrease in mass is due to the concentration of the solutes being higher in the solution outside of the dialysis bag, which will cause water to flow out.

Detailed explanation-4: -Transferring the swollen red blood cells into a 5% solution (which is hypertonic) will drive the water molecules from the cells causing them to shrink.