Discuss the conditions necessary to cause water to diffuse out of a cell

When water molecules diffuse through a cell membrane this process is called the osmosis. Water molecules are extremely small and because of this they can slip freely through the gaps between the phospholipids in the cell membrane. And as a result, water molecules can constantly move back and forth though the cell 
membrane. This movement of water has a very important function and that is it enables cells to absorb water. 

Now for a movement of water molecules to happen, there should be a concentration gradient in the surrounding. That is, the amount of water in one side must be different on the other side.

For water to diffuse INTO the cell, the amount of water outside the cell membrane should be larger than the amount of water inside the side.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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