Based on the clue 'a substance called heme is the most ironic portion...', what is the answer?

What is associated with: a subsidiary of amr corporation this airline is the worlds largest with more than 1000 planes… Based on the clue 'a subspecialty of internal medicine it deals with ...', what is the answer? Based on the clue 'a subspecies of cutthroat trout the bonneville cut...', what is the answer? Based on the clue 'a subspecies of this type of large cat lives on th...', what is the answer? Based on the clue 'a substance called luciferin helps these creatures...', what is the answer? Based on the clue 'a substance like a plastic made of macromolecules ...', what is the answer? Based on the clue 'a substance like sodium bicarbonate used to neutra...', what is the answer? Based on the clue 'a substance produced in the blood in response to a...', what is the answer?