Which molecule is produced by oxidation of most amino acid's leading to potential carbon lost by organisms that cannot fix carbon

What do all macromolecules have in common with each other? oa. they all are formed from the same elements. ob. they all have major roles in cell membranesoc. they all act as catalysts in the body. od. they all have peptide bonds between carbon atoms.

According to the cladogram, which organisms have roundworms as a common ancestor?

What maintain homeostasis when a persons internal body temperature is 97.5°f