ribosome [ri´bo-sōm] any of the intracellular ribonucleoprotein organelles concerned with protein synthesis, found either bound to cell membranes or free in the cytoplasm. They may occur singly or in clusters (polyribosomes). The genetic code is translated when ribosomes attach to messenger RNA. ri·bo·some (rī'bō-sōm), A granule of ...
Ribosomes: Definition, Structure, and Functions. What are Ribosomes. Ribosomes are cell structures present in large numbers in all living cells acting as the site of protein synthesis. In prokaryotes, they float freely in the cytoplasm, while in eukaryotes they are free or remain bound to the outer membrane of the endoplasmic reticulum.
‘Thus transcribing RNA polymerases and ribosomes may all be bound to the same RNA molecule while marching in the same direction.’ ‘This necessitated a mechanism for the import of the now nucleus-encoded proteins, which are synthesized at free ribosomes in the cytoplasm.’
Ribosome definition: any of numerous minute particles in the cytoplasm of cells, either free or attached to... | Meaning, pronunciation, translations and examples
ribosome: 1 n any of a group of particles in the cytoplasm of a living cell; they attach to mRNA and move down it one codon at a time and then stop until tRNA brings the required amino acid; when it reaches a stop codon it falls apart and releases the completed protein molecule for use by the cell “the ribosome is the site of protein ...
Ribosomes are tiny molecules in the cells of the body that help form an amino acid, which makes proteins. Protein is one of the three nutrients that the body uses as calories or energy sources. Read medical the full medical definition of ribosome, written by our doctors.
Ribosomes Definition The ribosome word is derived – ‘ribo’ from ribonucleic acid and ‘somes’ from the Greek word ‘soma’ which means ‘body’. Ribosomes are tiny spheroidal dense particles (of 150 to 200 A 0 diameters) that are primarily found in most prokaryotic and eukaryotic.
Psychology Definition of RIBOSOME: A very small round cytoplasmic particle comprised of RNA and protein which is the site of protein synthesis as directed by mRNA.
a tiny, somewhat mitten-shaped organelle occurring in great numbers in the cell cytoplasm either freely, in small clusters, or attached to the outer surfaces of endoplasmic reticula, and functioning as the site of protein manufacture.
Ribosomal RNA Definition. Ribosomal ribonucleic acid (rRNA) is the RNA component of ribosomes, the molecular machines that catalyze protein synthesis.Ribosomal RNA constitute over sixty percent of the ribosome by weight and are crucial for all its functions – from binding to mRNA and recruiting tRNA to catalyzing the formation of a peptide bond between two amino acids.