A) Ribosome
B) Mitochondria
C) ER
D) Nucleus
Correct Answer: A
Solution :
Ribosomes are ribonucleoprotein particles. These are the site 6f protein synthesis. Two basic types of ribosomes are- [a] 70S type (50S + 303): These are found in prokaryotes, mitochondria and chloroplast. [b] 80S type (60S +40S): These are found in cytoplasm of eukaryotes. Mitochondria, endoplasmic reticulum and nucleus are membrane bound cell organelles found in eukaryotic cell only. These are absent in prokaryotic cells.
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