What Structures Form the Subunits of Ribosomes

Question

What structures form the subunits of ribosomes?
A) mRNA and DNA
B) tRNA and mRNA
C) rRNA and proteins
D) DNA and proteins

Accepted Answer

The subunits of ribosomes are formed by a combination of ribosomal RNA (rRNA) and proteins. Specifically, the large subunit of the ribosome is composed of three rRNA molecules and a variety of proteins, while the small subunit is made up of one rRNA molecule and a smaller set of proteins. Therefore, choice C, rRNA and proteins, is the correct answer.