Which organelle is the site of protein synthesis by ribosomes?

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Multiple Choice

Which organelle is the site of protein synthesis by ribosomes?

Explanation:
Proteins are made by ribosomes, which read mRNA and assemble amino acids into a polypeptide chain. These ribosomes can be free in the cytoplasm or attached to the rough endoplasmic reticulum. The other organelles have different roles: the Golgi apparatus modifies and packages proteins, the lysosome digests waste, and the smooth endoplasmic reticulum produces lipids and lacks ribosomes. So, the site where protein synthesis by ribosomes occurs is the ribosome itself.

Proteins are made by ribosomes, which read mRNA and assemble amino acids into a polypeptide chain. These ribosomes can be free in the cytoplasm or attached to the rough endoplasmic reticulum. The other organelles have different roles: the Golgi apparatus modifies and packages proteins, the lysosome digests waste, and the smooth endoplasmic reticulum produces lipids and lacks ribosomes. So, the site where protein synthesis by ribosomes occurs is the ribosome itself.

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