Question

Where are proteins synthesized inside the cell?

Answer 1

Ribosomes

1. In a cell, ribosomes are the site of protein synthesis.
2. Rough endoplasmic reticulum (RER) has ribosome particles attached to its surface.
3. Ribosomes are present in the cytoplasm, mitochondria, and plastids, so these organelles also have their own protein synthesis machinery.
4. Thus, sites of protein synthesis in a cell are RER, mitochondria, plastids, and nucleus.
5. Proteins are synthesized inside rough endoplasmic reticulum.