A/Cell membranes and cell walls are selectively permeable and aid in communication.
Explanation:
Cell Membranes or cell wall have phospholipid bi layer which functions
as a selectively permeable barrier that separates an internal
environment from an external one. They are selective permeable through
passive process (concentration gradient) allowing certain molecule
diffuse into cells
Answer:
what do you need help with
Answer:
Calories
Explanation:
Calories provide the body with energy that it needs. Everyone needs to consume a certain number, but each person’s needs are different based on their body and activity level.
Answer:
The likelihood that a particular event will occur.
Explanation:
