Ribosomes: The Protein Factories of Cells

What are ribosomes and where are they produced?

- Enzyme-like bodies

- Produced in the nucleus

Answer:

Ribosomes are small structures that are majorly responsible for protein synthesis in cells, existing freely in the cytoplasm or attached to the rough endoplasmic reticulum. They are composed of RNA and proteins and receive instructions from mRNA for synthesizing proteins.

Ribosomes are enzyme-like bodies produced in the nucleus. Many of these structures pass out of the nucleus and attach themselves to the inner lining of the endoplasmic reticulum (ER). Ribosomes are not surrounded by a membrane and can be found in both eukaryotic and prokaryotic cells. They consist of two subunits, a large and a small one. Some ribosomes float freely in the cytoplasm, while others are found attached to the rough ER or the nuclear envelope. These organelles are vital for protein synthesis, receiving their instructions from messenger RNA (mRNA) that has been transcribed from DNA.