Science / Biology / Ribosomes: Small organelles made of rRNA and protein in the cytoplasm of prokaryotic and eukaryotic cells; aid in the production of proteins on the rough endoplasmic reticulum and ribosome complexes. The site of protein synthesis. The ribosome is composed of two subunits that attach to the mRNA at the beginning of protein synthesis and detach when the polypeptide has been translated.

Transfer RNA (TRNA)

Science / Genetics / Transfer RNA (TRNA): A class of rna having structures with triplet nucleotide sequences that are complementary to the triplet nucleotide coding sequences of mrna. The role of trnas in protein synthesis is to bond with ami MORE

Ribosomal RNA (RMA)

Science / Genetics / Ribosomal RNA (RMA): A class of rna found in the ribosomes of cells. MORE


Science / Biology / Prokaryote: Type of cell that lacks a membrane-bound nucleus and has no membrane organelles; a bacterium. Prokaryotes are more primitive than eukaryotes. Cells lacking membrane-bound organelles and having a singl MORE