Question at position 17 All prokaryotes containmitochondria and DNA.chloroplasts and vacuoles.DNA and a cell wall.a nucleus and DNA.Clear my selection

Question

BlackTom AI · Accepted Answer

The question asks about what all prokaryotes contain. 
Option 1: 'mitochondria and DNA.' Prokaryotes do not possess membrane-bound organelles like mitochondria, so this is incorrect even though they do have DNA. 
Option 2: 'chloroplasts and vacuoles.' Chloroplasts and vacuoles are organelles found in many plant cells and some algae, not in prokaryotes; thus this is false for prokaryotes. 
Option 3: 'DNA and a cell wall.' Prokaryotes certainly have DNA (genetic material) and most have a cell wall made of peptidoglycan (in bacteria) or other polymers in archaea; this option accurately reflects a core feature of prokaryotes. 
Option 4: 'a nucleus and DNA.' Prokaryotes lack a true, membrane-bound nucleus, so this statement is incorrect despite containing DNA in the cytoplasm. 
Overall, the only statement that correctly characterizes all prokaryotes among the options is that they have DNA and a cell wall.

Question at position 17 All prokaryotes containmitochondria and DNA.chloroplasts and vacuoles.DNA and a cell wall.a nucleus and DNA.Clear my selection单项选择题

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