Cell Membrane- <span>Cell boundary (made of lipids), controls movement of materials in and out of the cell. (proteins), recognizes signals.
Cytoplasm-</span><span>Jelly-like material holding organelles in place. (Mostly made of water)
Nucleus-</span><span>Control center of the cell. Protects the DNA</span>
I DONT HAVE THE ANSWER BUT GOOD LUCK
Diffusion is the movement of particles across a semi-permeable membrane from a lower concentration to a higher concentration
<span>A proton is positive, Its in the center of the atom, electrons are on the outer orbits of the atom.</span>