A(n) is the smallest unit of an element that maintains the properties of that element.

question 2 options:

molecule

nucleus

atom

particle

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?