What are the two fundamental groupings of organisms based on their metabolism? How do they differ in terms of how they obtain energy?

a) Autotrophs - obtain energy from sunlight; Heterotrophs - obtain energy from organic molecules.
b) Prokaryotes - obtain energy from inorganic compounds; Eukaryotes - obtain energy from organic compounds.
c) Aerobes - obtain energy from oxygen; Anaerobes - obtain energy without oxygen.
d) Chemotrophs - obtain energy from chemicals; Phototrophs - obtain energy from lig