Ribosomes are composed of:ArRNA and proteinsBrRNA and lipidsCrRNA and carbohydratesDProteins and lipidsAnswer: A. rRNA and proteins Read Explanation: A ribosome is a ribonucleoprotein, which means it is made up of RNA and protein.It is made up of two subunits, one smaller and the other larger. In prokaryotes and eukaryotes, the densities of the ribosomes differ. Read more in App