Which of the following correctly summarizes why bacteria and archaea are not in the same kingdom?
a. only archaea have cell membranes made from straight chains of peptidoglycan.
b. only bacteria are both prokaryotic and single-celled organisms.
c. archaea are believed to be the ancestor of bacteria and therefore cannot be in the same kingdom as bacteria.
d. their cell walls are created from different substances and bbacteria has an rna polymerase that archaea lacks.

The correct option among all the options is option "D

Explanation:

Cell walls are created from different substances, bacterial cell wall contains peptidoglycan and archaea lacks it in its cell wall.

Archaea lacks RNA polymerase while bacteria have an RNA polymerase. that correctly summarizes why bacteria and archaea are not in the same kingdom.

Thus, the correct option among all the options is option "D".

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).

"a.) well–developed vascular system."