|The ribosomes are the protein makers of the cell. They receive messages from the nucleus. The nucleus tells the ribosome what kinds of proteins to make and when to make them. There are two types of ribosomes: free ribosomes and bound ribosomes.|
Bound ribosomes stick to the surface of the rough endoplasmic reticulum (ER). They work like a little factory to build the protein. When it is done making it, the ER puts the proteins into a package called a vesicle, which will be sent out of the cell.
Ribosomes can also be found floating around the cell. These are the free ribosomes. Free ribosomes make proteins that will stay inside the cell.
Next, let's learn more about my favorite organelle, the nucleus.