Ribosomes are small organelles found in the cells of all life forms. They are quite small, only a few hundred nanometers across. It has been theorized that ribosomes were once… independent life forms, reproducing on their own, until other chemicals such as carbohydrates and DNA were brought into the fold at a later time. Ribosomes are composed of rRNA (ribosomal RNA, or ribonucleic acid) and other catalytic proteins. Their main function is to produce a variety of proteins from simple genetic instructions which propagate outwards from the cellular nucleolus in the form of messenger RNA (mRNA). Ribosomes float in the cytoplasm of a cell or bind to the endoplasmic reticulum, ribbon-like structures found within the cell. Ribosomes are Parts inside of Cell, they help make proteins. Yes, they are organelles of a cell. they attach themselves onto the Endoplasmic Reticulum, another organelle of a cell. and yes, they synthesize proteins. They are mostly found on the Endoplasmic Reticulum(known as the ER) and the Golgi Body Ribosomes, attached to the ER, 'read' mRNA, and translate it to proteins..
The above description about the Endoplasmic reticulum pertains to eukaryotic cells. Prokaryotic cells also have Ribosomes. Ribosomes are organelles used by the cell to produce proteins (protein synthesis). Ribosomes are either floating in the cytoplasm or attached to membranes. In general, free-floating ribosomes produce proteins that are used inside the cell, and membrane-attached ribosomes manufacture proteins for use outside the cell. Ribosomes are the tiny structures reported by palade.These are also called as ergosomes.These are ribo nucleo protein granules produced in nucleolus and move into cytoplasm where they may be free or attached to ER ribosomes are organelles in which amino acids are hooked together to make proteins. ribosomes are organelles in which amino acids are hooked together to make proteins. ribosomes are organelles in which amino acids are hooked together to make proteins. ( Full Answer )