Aprotein signature is:
the path followed by a protein after it is synthesized in the nucleus
the path followed by a protein in the cytoplasm
a protein expressed on the cell surface
a unique set of proteins present in a diseased state

i thinking chemical change

gag reflex, poor dentition, gum retraction

have a good day

a bird that nests only in a particular tree species.

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.