Here's why:
* Mitochondria are responsible for cellular respiration, the process of converting glucose into ATP (adenosine triphosphate), which is the primary energy currency of cells.
* Ribosomes are the sites of protein synthesis. They read the genetic code from mRNA (messenger RNA) and assemble amino acids into proteins. While proteins are essential for all cell functions, they don't directly produce energy.
Think of it this way:
* Mitochondria are like power plants, generating energy.
* Ribosomes are like factories, building the machines that the cell needs to function.
