Ribosomes are composed of rRNA and what other component?

protein

carbohydrates

DNA

mRNA

Protein

Explanation:

Ribosomes are made up of two sub-unites:

The larger of the 2 sub-unite where the amino acids get added to form polypeptide chain. The small sub-unite (which reads the RNA) is where the mRNA bind and is decoded. So, each of the molecules composed of one or more ribosomal RNA and ribosomal proteins.