1. Messenger RNA (mRNA): This type of RNA carries genetic information from DNA in the nucleus to the ribosomes in the cytoplasm, where proteins are synthesized. It acts as a template for protein synthesis.

2. Transfer RNA (tRNA): This type of RNA acts as a carrier molecule that brings specific amino acids to the ribosome during protein synthesis. It has a specific anticodon sequence that recognizes the codon on mRNA, ensuring the correct amino acid is added to the growing polypeptide chain.

3. Ribosomal RNA (rRNA): This type of RNA is a structural component of ribosomes, the cellular machinery responsible for protein synthesis. It provides a scaffold for the assembly of ribosomes and helps in the correct positioning of mRNA and tRNA during translation.