I had to look for the missing options so here is my answer:
A receptor protein is a kind of intracellular protein which activates its function when it receives signals from outside of the cell. One of the responses it does is some changes in the tissues. Receptor proteins possess multiple functions inside the cell, and the one that is not included is <span>preventing cytoplasmic reconstitution. </span>
I think it's <span>a=F/m ; F=m/a=1200 kg x 3.0 m/s^2 = 3600 N</span>
C) Endocytosis is the answer for this question because a cell will go out and find something it needs and then take it in. (i.e. cell eating or phagocytosis)
It produces lava, which is what magma is called when it leaves the center of the earth. It exits through a fault or volcano.
