Where are ribosomes found in a cell?

Ribosomes are found 'free' in the cytoplasm or bound to the endoplasmic reticulum (ER) to form rough ER. In a mammalian cell there can be as many as 10 millionribosomes. Several ribosomes can be attached to the same mRNA strand, this structure is called a polysome. read more

Ribosomes found floating in the cytosol of a cell are called “free” ribosomes. Cytosol makes up the largest portion of the cell’s volume and includes the fluid in which organelles move. The cytoplasm includes the cytosol and the organelles except for the nucleus. read more

Ribosomes are created inside the nucleolus, which is inside the nucleus, in an animal cell. They frequently move through the endoplasmic reticulum, attaching to its walls, to get to their destinations. They are often found in the Golgi apparatus and floating freely in the cell's cytoplasm as well. read more