Question

what is the main role of rrna (ribosomal rna)?

a. to deliver amino acids to ribosomes
b. to break down mrna after protein synthesis
c. to form the core structure of ribosomes
d. to code for proteins

Explanation:

rRNA is a type of RNA that is a major component of ribosomes. Ribosomes are the sites of protein synthesis in cells. tRNA (transfer RNA) delivers amino acids to ribosomes (so option a is wrong). Enzymes and other mechanisms break down mRNA after protein synthesis, not rRNA (so option b is wrong). mRNA (messenger RNA) codes for proteins (so option d is wrong). rRNA forms the core structure of ribosomes.

Answer:

C. To form the core structure of ribosomes