Do you mean:
In a typical cell membrane, *phospholipids* arrange themselves to form a ?
In that case, the answer is:
Bilayer
I am sure that it is not a or b and pretty sure that it isn't d so it is c
When ATP loses a phosphate, energy is released and ADP is formed
Answer:
Even when equilibrium is reached, particles of a solution will continue to move across the membrane in both directions. However, because almost equal numbers of particles move in each direction, there is no further change in concentration.
Explanation:
hope this helps
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