Scientists divided thw kingdom monera into two groups, the archaebacteria and the eubacteria. advances in biochemistry and genetics to separate organisms into the two prokaryotic kingdoms. compare and contrast the two prokaryotic kingdoms. what is one major difference that is apparent? a) archabacteria are the only organisms on earth that do not contain dna. b) the chemical composition of the cell walls of each in the two kingdoms varies. c) archaebacteria are much smaller than any known organisms on earth or in the history of earth. d) archaebeceria are capable of producing their own food without chloroplasts, using mitochondria instead.

The most appropriate answer would be B) The chemical composition of the cell walls of each in the two kingdoms varies.  

The cell wall of the eubacteria is mainly composed of peptidoglycan. It is a type of polymer made up of sugars and amino acids. The sugar component usually consists of alternate units of N-acetylmuramic acid (NAM) and  N-acetylglucosamine (NAG). The sugar polymers are cross-linked with the help of a peptide chain.

In contrast, the cell wall of archaebacteria does not contain peptidoglycan. They contain other types of polysaccharides and proteins

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the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.