Select the description that would represent a pathogen that would be considered a virus. a) an organism that feeds off others in order to gain its nutrients b) a single-celled organism that can be a parasite c) genetic material that is surrounded by a protein coat and used a host cell to reproduce d) a single-celled organism that infects animals and plants

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.