The primary structure of a protein is its amino acid sequence. This drives the folding and bonding of the linear amino acid chain, which in turn determines the unique three-dimensional shape of the protein.
<em>I hope this helps you</em>
<em>:)</em>
Answer:
barter trade
Explanation:
because you exchange goods
Answer: they are not living things
Explanation: The virus needs a living cell to multiply because on they're own they can't do anything.
