AP BIOLOGY

Detailed explanation-1: -Answer: Oxygen molecules move from air sacs in the lungs across cell membranes into blood. Robert sprays water on the veggies in the produce section to “plump them up". Water will diffuse (osmosis) and the fish will explode.

Detailed explanation-2: -Final Answer: Uptake of water by root hair and swelling of seed when put in soil are examples of osmosis.

Detailed explanation-3: -Osmosis can only function in a liquid medium, but diffusion can occur in all three mediums (solid, liquid and gas). Furthermore, osmosis requires a semi-permeable membrane, while diffusion does not. The intake of water in plants is an example of osmosis.

Detailed explanation-4: -A phenomenon called endosmosis takes place when raisins are placed in water for few hours. When raisins are soaked in water, they swell. All this is due to the process of osmosis. The water molecules pass the cell membrane of the raisins and the raisins thus get swollen.