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bio204.s1.d40

cava bio 204 s1.d40 3.09 Active Transport

QuestionAnswer
The [-able] cell membrane regulates the movement of materials into and out of a cell. The semipermeable cell membrane regulates the movement of materials into and out of a cell.
If the cell has to actually do something (expend energy) to transport something across its membrane, that's called *[...] Transport*. If the cell has to actually do something (expend energy) to transport something across its membrane, that's called *Active Transport*.
In electrical terms, a 'potential' is a difference in [...] between two things. In electrical terms, a 'potential' is a difference in charge between two things.
Nerve cells maintain an electrical 'potential' (a charge difference) between the outside and inside of the cell by [-ly] transporting positive ions outside the cell. Nerve cells maintain an electrical 'potential' (a charge difference) between the outside and inside of the cell by actively transporting positive ions outside the cell.
As a nerve cell produces neurotransmitters , it encases them in membrane-bound structures called [-s]. These are like the barn where they keep race horses before the race.... just a handy way to keep them nearby until it's race time. As a nerve cell produces neurotransmitters , it encases them in membrane-bound structures called vesicles. These are like the barn where they keep race horses before the race.... just a handy way to keep them nearby until it's race time.
Created by: mr.shapard