(what organelle is this) Passive transport is taking place across this thin cell covering causing the muscle cells to contract.

This question appears incomplete

Explanation:

This question appears incomplete. However, the cell organelle involved in transportation of molecules in the cell is the cell membrane. This cell membrane can be said to be cause of several forms of transportation in and out of the cell - this is because the membrane is a selective barrier. While some substances/molecules move through diffusion by moving with the concentration gradient (as in the case of passive transport, others move against the concentration gradient requiring energy to cause the transportation (as in the case of active transport).

answer; the correct answer is conflict- related aggression; +