How is a protein different from a polypeptide ? .

What two fields of study provide the core information that is used to classify organisms?

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

Amines amides and amino acids are categories of