Answer: hydrogen bonds a protein with no quaternary structure a protein
Answer:
they have thin membranes to allow diffusion of substance for short distance
they are numerous to increase the surface area of absorption
hope this helps
Answer:
Cytoplasm
Explanation:
Cytoplasm is kind of like cell blood. Cell membrane is cell skin, I've legit never heard of a cell skeleton in my life and centrioles are RNA processors.
They need to divide so they replace old or damaged cells
