Ultramicroscopical examination of "dark" hepatocyte population in the cell cytoplasm detected a developed granular endoplasmic reticulum. What function has this organella in these cells?

Answer options

1. Deintoxicative function
2. Carbohydrate synthesis
3. Synthesis of blood plasma proteins
4. Calcium ion depositing
5. Bile production

Explanation

The rough (granular) endoplasmic reticulum is studded with ribosomes that are the sites of protein synthesis. The rough endoplasmic reticulum is especially prominent in cells such as hepatocytes.