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The site of protein synthesis (translation) is the:
ARibosome — composed of rRNA and proteins
BEndoplasmic reticulum lumen
CMitochondria only
DNucleus
Answer & Solution
Correct answer: A. Ribosome — composed of rRNA and proteins
Translation occurs on **ribosomes** — composed of ~rRNA and ~80 different proteins, in two subunits (large + small). The **23S rRNA in bacteria acts as the catalyst (ribozyme)** for peptide bond formation — proof that life began around RNA.
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