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vaieri [72.5K]
3 years ago
7

If a never pregnant female rat is left for 5-10 days with a litter of babies, she will

Biology
1 answer:
lord [1]3 years ago
6 0
I believe she will eat the babies
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Diffusion does not require any energy because it occurs down a concentration gradient. This means it goes from one side which has a high concentration of a particular molecule, to another side with a low concentration of this molecule. This is a passive act, requiring no energy input from the cell because it simply equalizes the concentrations of the molecules on both sides of a membrane. Simple ion channels are in place for diffusion, and the molecule diffuses to the less concentrated side simply and without the need for ATP being broken down for energy.

Active transport on the other hand, does exactly the opposite. Molecules to be actively transported will go from a side in which they are less concentrated to a side in which there is already a high concentration of them, so against the concentration gradient. This process requires energy- if you think of cramming more objects into an already stuffed room, more energy and force is needed to push them into that crowded space.

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