Which organelle is responsible for protein synthesis in a cell?

The ribosome is the cellular organelle primarily responsible for protein synthesis, a process known as translation, where genetic information from mRNA is used to build polypeptide chains.

• Mitochondria are known as the 'powerhouses' of the cell, generating most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.
• The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.
• Lysosomes contain digestive enzymes and are involved in waste breakdown and cellular recycling.

Therefore, ribosomes are uniquely specialized for protein production.