Name classifications of matter used in the 1800's

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane

Prokaryotic and eukaryotic cells are different in many ways other than the presence or absence of a nucleus. if both archaebacteria and eubacteria are prokaryotic cells, then why are archaebacteria more closely related to eukaryotic cells than they are to eubacteria?