Membrane potential is the difference in electric potential between the interior and the exterior of a biological cell. Membrane potential is a potential gradient that forces ions to passively move in one direction: positive ions are attracted by the 'negative' side of the membrane and negative ions by the 'positive' one.
The answer is A, water enters threw the roots not the leaves
Answer:
a light year is 2 seconds
the answer would be more be cause its the point at witch the moon blocks the sun, so if the moon revolved faster it would cover the sun more often.
Answer:
saturated fats:single bonds
trans fat: one doubled bond