Lipids are broken down by bile and digestive enzymes before absorption into the body. where does absorption take place?

The first amino acid of a new polypeptide chain is

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

You are studying a protein that you call protein x. there is an aspartic acid at a key position in protein x which is important in the folding and stabilization of that protein. if this aspartic acid is changed to a different amino acid, which type of amino acid substitutions is most likely to allow the protein to fold normally?