Question

Mitochondria and chloroplasts are suggested to have evolved from symbiotic prokaryotes present in primitive eukaryotic cells. One evidence for this is that:

• A. These organelles contain cristae or thylakoids
• B. These organelles contain electron transport chain
• C. The genetic code in these organelles is same as in all organisms
• D. The ribosomes in these organelles share properties with those of prokaryotes

Answer 1

The correct option is D The ribosomes in these organelles share properties with those of prokaryotes

• Such Evidences are following
• Mitochondria and chloroplasts are the same size as prokaryotic cells and divide by binary fission.
• Mitochondria and chloroplasts have their own DNA which is circular, not linear.
• Mitochondria and chloroplasts have their own ribosomes which have 30S and 50S subunits, not 40S and 60S.
• So, the correct option is 'D