Chapter 13 Science Notes

Chapter 13: ribonucleic astringent and Protein Synthesis * 13.1 ribonucleic acid * The employment of ribonucleic acid * How does ribonucleic acid push from deoxyribonucleic acid?: There atomic number 18 ternion important differences amidst ribonucleic acid and DNA: (1) the sugar in ribonucleic acid is ribose alternatively of deoxyribose, (2) ribonucleic acid is elementrally angiotensin converting enzyme- filumed and non double-stranded, and (3) ribonucleic acid contains uranium in place of thymine * Comparing ribonucleic acid and DNA: on that propose are three differences in ribonucleic acid and DNA. * Functions of RNA * messenger RNA: type of RNA that carries copies of instructions for the assembly of aminic acids into proteins from DNA to the rest of the kiosk * Ribosomal RNA: type of RNA that combines with proteins to form ribosomes * Transfer RNA: type of RNA that carries all(prenominal) aminic acid to a ribosome during protein entailment * RNA synthesis * How does the cell hold RNA?: in organization, segments of DNA deal out as templates to form completing RNA motes.

* Transcription: synthesis of an RNA molecule from a DNA template * RNA polymerase: enzyme that cerebrate together the ontogeny compass of RNA nucleotides during transcription exploitation a DNA strand as a template * Promoters: crabby proposition region of a gene where RNA polymerase can hold back and begin transcription * RNA editing * Introns: installment of DNA that is not involved in enrol for a protein * Exons: expressed sequence of DNA; codes for a protein * 13.2 Ribosomes and Protein Synthesis * The genetic code * What is the genetic code, and how is it take up?: the genetic code is demonstrate three letters at a time, so that to from severally one one word is three bases long and corresponds to a single amino acid. * Polypeptides: long ambit of amino acids that makes proteins * Genetic code: devote of battle of codons of mRNA, each of which directs the incorporation of a particular amino acid into a protein during protein synthesis * Codon:...If you want to get a full essay, order it on our website: Ordercustompaper.com

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