Answer:
A is pointing to the cell membrane. The cell membrane's main function is to provide protection for the cell as well as allow substances in and out of the cell due to selective permeability.
Explanation:
Some other functions:
-Endocytosis and Exocytosis
-Cell Signaling
Answer:
Right Atrium
Explanation:
ion really know but sounds like a
Right Atrium/Heart typo answer
Answer:
a. Extension of the lower leg
Explanation: is correct
Answer:
b.
Explanation:
because the occur will mostly cross