(what organelle is this) Passive transport is taking place across this thin cell covering causing the muscle cells to contract.
2 answers:
Passive transport occurs along the plasma membrane
I think it is cell membrane
You might be interested in
I think the answer would be D goodluck
Pillow Talkin by Lil Dicky explains it all
TOPOGRAPHY AND ELEVATION .
To determine if your hypothesis was correct for future reference
