How do the two domains of prokaryotes differ?

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Solution

Bacteria are unicellular prokaryotic organisms that have cell walls but lack organelles.
Archaebacteria refers to an ancient group of bacteria that evolved separately from the bacteria and blue-green algae.
Bacteria Archaebacteria
1. Bacteria have a peptidoglycan layer in their cell wall. 1. Archaebacteria do not have a peptidoglycan layer in their cell wall.
2. Their membrane lipids are ester-linked. 2. Their membrane lipids are ether-linked.
3. The first amino acid is methionine in all proteins. 3. First amino acid is formylmethionine in all proteins.
4. Their genes are different from Eukarya. 4. Their genes are similar to Eukarya.
5. Example- Salmonella typhi 5. Example- Methanobacteria

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Bacteria	Archaebacteria
1. Bacteria have a peptidoglycan layer in their cell wall.	1. Archaebacteria do not have a peptidoglycan layer in their cell wall.
2. Their membrane lipids are ester-linked.	2. Their membrane lipids are ether-linked.
3. The first amino acid is methionine in all proteins.	3. First amino acid is formylmethionine in all proteins.
4. Their genes are different from Eukarya.	4. Their genes are similar to Eukarya.
5. Example- Salmonella typhi	5. Example- Methanobacteria