For the following scenarios, determine whether the molecules In the scenario are

Question

For the following scenarios, determine whether the molecules In the scenario are moving by (S) simple diffusion, (F) facilitated diffusion, or (A) active transport. _____ For water to travel across the cell membrane at a substantial rate, the water molecules travel through protein channels known as aquaporins. _____ While water molecules are polar, they are also very small. One fact not mentioned in the video is that some water molecules are able to squeeze directly through the phospholipid bilayer due to their small size. _____ Charged ions are travelling through a cell membrane with the concentration gradient. _____ Cells lining the gut need to take in glucose, but at a certain time, the concentration of extracellular glucose is lower than the concentration already stored in the cells. ____ At a certain time, glucose is in a high concentration outside of a cell and needs to travel through the membrane into the cell.

Explanation / Answer

8-facilated diffusion 9-simple diffusion 10-active transport 11-simple diffusion 12-active transportation

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