Answer:
The answer is most likely all of the above
Answer:
Explanation:
Proteins are built from a set of only twenty amino acids, each of which has a unique side chain. The side chains of amino acids have different chemistries.
Answer:
I think it's a I'm not sure though
Answer:what is the answer
Explanation:
The lipid bilayer of biological membranes<span>, is intrinsically impermeable to </span>ions<span> and polar molecules. Permeability is conferred by two classes of membrane </span>proteins<span>, pumps and channels.</span>