Here's why:

* Ribosomes are the protein synthesis factories of the cell. They read the genetic code from messenger RNA (mRNA) and use that information to assemble amino acids into specific protein chains.

* Proteins are essential for virtually every function in the cell. They act as enzymes, structural components, hormones, and more.

While ribosomes are the primary site of protein synthesis, it's important to note that proteins often undergo further processing and modification after being assembled by ribosomes. This happens in other organelles like the endoplasmic reticulum (ER) and Golgi apparatus.