Because no one else can make it but ribosomes.
Mitochondrial proteins are made in the cytoplasm of the cell, not within the mitochondria themselves.
Proteins are made in the Rough Endoplasmic Reticulum.
Nucleolus is where ribosomes are made. Ribosomes are made up of RNA and several proteins, and they are a necessary part in the synthesis of proteins. An interesting fact about the nucleolus is that they disappear during cell reproduction. This is probably because the need for ribosomes disappears during cell reproduction.
Which is the process by which newly-made proteins are secreted out of an animal cell?
ribosomes make the proteins in cells
ribosomes make the proteins in cells
Your butt
In the Ribosomes.
proto-oncogenes
They are made as peptides on ribosomes. Later they become other proteins incytoplasm
ribosomes
ribosomes