Question

identify all the general similarities between bacteria and archaea. peptidoglycan cell walls lack membrane - bound organelles lack a membrane - bound nucleus structure of lipids in the cell membrane

Explanation:

1. Analyze "Peptidoglycan cell walls": Bacteria have peptidoglycan cell walls, but Archaea do not. So this is not a similarity.
2. Analyze "Lack membrane - bound organelles": Both Bacteria and Archaea are prokaryotes. Prokaryotic cells lack membrane - bound organelles like mitochondria, endoplasmic reticulum, etc. So this is a similarity.
3. Analyze "Lack a membrane - bound nucleus": Prokaryotes (Bacteria and Archaea) do not have a membrane - bound nucleus. Their genetic material is in a nucleoid region. So this is a similarity.
4. Analyze "Structure of lipids in the cell membrane": The lipid structure in the cell membrane of Bacteria and Archaea is different. Bacteria have ester - linked lipids, while Archaea have ether - linked lipids. So this is not a similarity.

Answer:

B. Lack membrane - bound organelles, C. Lack a membrane - bound nucleus