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Ribosomes of bacteria, mitochondria and chloroplasts are
Ribosomes of bacteria, mitochondria and chloroplasts are
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Solution
The correct option is C 70S
Mitochondria and chloroplasts are thought to have arisen from bacteria, engulfed by primitive cells in a process called as endosymbiosis. Mitochondria probably evolved when cells took up aerobic bacteria, while chloroplasts were derived from photosynthetic bacteria, such as cyanobacteria. Mitochondria and chloroplasts generate energy for their host cells, but are not completely independent. The cytoplasmic ribosomes of prokaryotes are 70S. The cytoplasmic ribosomes of eukaryotes are 80S.
Mitochondria and chloroplasts are thought to have arisen from bacteria, engulfed by primitive cells in a process called as endosymbiosis. Mitochondria probably evolved when cells took up aerobic bacteria, while chloroplasts were derived from photosynthetic bacteria, such as cyanobacteria. Mitochondria and chloroplasts generate energy for their host cells, but are not completely independent. The cytoplasmic ribosomes of prokaryotes are 70S. The cytoplasmic ribosomes of eukaryotes are 80S.
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