A) Mesosome
B) Mitochondria
C) Ribosome
D) Liposome
Correct Answer: C
Solution :
Ribosomes are the granular structures, composed of ribonucleic acid (RNA) and proteins and are not surrounded by any membrane. They are first observed by George Palade (1953) under the electron microscope as dense particles. The eukaryotic ribosomes are 80S, while the prokaryotic ribosomes are 70S.
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