Biology · Cell Biology
Mitochondrial protein synthesis shares characteristics of prokaryotic origin. Consider the following statements comparing ribosomes from bacteria and mammalian mitochondria: A. The bacterial ribosome consists of small and large subunits of 30S and 50S respectively, whereas in mammalian mitochondria these subunits are 28S and 39S. B. In bacterial ribosomes, the RNA : protein ratio is about 2 : 1, whereas in mitochondrial ribosomes this ratio is usually 1 : 2. C. Both bacterial and mitochondrial ribosomes consist of 30S and 50S subunits. D. Both bacterial and mitochondrial ribosomes consist of RNA and protein in a 1 : 1 ratio. Choose the option that represents all correct statements.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A and B only✓
- 2B and C only
- 3C and D only
- 4A and D only
Correct answer
A and B only
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