Question

what type of rna is joined with proteins to form ribosomes? mrna rrna trna

Explanation:

Ribosomal RNA (rRNA) is the type of RNA that combines with proteins to form ribosomes. Ribosomes are essential for protein synthesis in cells. mRNA (messenger RNA) carries genetic information from DNA to ribosomes for protein synthesis, and tRNA (transfer RNA) brings amino acids to the ribosomes during protein synthesis. But it is rRNA that directly forms ribosomes along with proteins.

Answer:

rRNA