Answer:Either the cell wall or the membrane
Explanation:
The cell wall proctects the cell while the membrane forms structures inside of the cell
Answer:
D the part of an atom counted to determine the atomic number of an element
The answer is B. Think of it this way. You always give insulin with a meal cause they need to raise their blood sugar. Glucagon is given when the blood sugar is too high and needs to come down.
I believe the answer is energy. Hope this helps. (ノ◕ヮ◕)ノ*:・゚✧