Ribosome - Wikipedia
The ribosome is a highly complex cellular machine. It is largely made up of specialized RNA known as ribosomal RNA (rRNA) as well as dozens of distinct proteins (the exact number varies slightly between species). The ribosomal proteins and rRNAs are arranged into two distinct ribosomal pieces of different size, known generally as the large and small subunit of the ribosome.
Ribosome | cytology | Britannica.com
Ribosome: Ribosome, particle that is present in large numbers in all living cells and serves as the site of protein synthesis. Ribosomes occur both as free particles in prokaryotic and eukaryotic cells and as particles attached to the membranes of the endoplasmic reticulum in eukaryotic cells. The small
Biology4Kids.com: Cell Structure: Ribosomes
When are ribosomes used in the process of protein synthesis? When the cell needs to make a protein, mRNA is created in the nucleus. The mRNA is then sent out of the nucleus and to the ribosomes. When it is time to make the protein, the two subunits come together and combine with the mRNA.
Ribosome biogenesis - Wikipedia
Ribosome biogenesis is the process of making ribosomes.In prokaryotic cells, it takes place in the cytoplasm with the transcription of many ribosome gene operons.In eukaryotes, it takes place both in the cytoplasm and in the nucleolus.It involves the coordinated function of over 200 proteins in the synthesis and processing of the three prokaryotic or four eukaryotic rRNAs, as well as assembly ...
Ribosome - Biology Encyclopedia - cells, body, function ...
The ribosome is the molecular machine inside the cell that makes proteins from amino acids in the process called translation .It binds to a messenger ribonucleic acid (mRNA) and reads the information contained in the nucleotide sequence of the mRNA. Transfer RNAs (tRNAs) containing amino acids enter the ribosome in a special pocket, or binding site, called the acceptor site (A site).
Ribosome | Definition of Ribosome by Merriam-Webster
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Ribosome | Define Ribosome at Dictionary.com
Ribosome definition, 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. See more.
Ribosome — Wikipédia
Le ribosome est la « machine » qui assure la traduction de la molécule d'ARNm dans la synthèse des protéines. Le code génétique assure la correspondance entre la séquence de l'ARNm et la séquence du polypeptide synthétisé.
Protein Synthesis Steps - Protein Synthesis
Translation elongation is second in protein synthesis steps. During the elongation step the polypeptide chain adds amino acids to the carboxyl end the chain protein grows as the ribosome moves from the 5' -end to the 3'-end of the mRNA.
BIOCOSMOLOGY - Dhushara
ABSTRACT: Thirty-eight years ago (King 1978) I proposed the biocosmological thesis that the form of life's origin and evolution is a cosmological interactive process defined in the cosmic symmetry-breaking at the origin of the universe.