The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Answer:
yes A system can be also be a system
1c. More
2d. In
2a. Inward
2b. Upward
2c. Less
2d. Out of ( not so sure though try searching on google maybe )
Anyways I hope this was helpful
You cant quote me completely on this... but i think the first one is A and the second one is C... again dont quote me but im pretty sure these are the answers
