key terms ch12

key terms ch12 - CHAPTER 12 TERMS central dogma The...

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CHAPTER 12 TERMS central dogma • The statement that information flows from DNA to RNA to polypeptide (in retroviruses, there is also information flow from RNA to cDNA). transcription • The synthesis of RNA using one strand of DNA as the template. translation • The synthesis of a protein (polypeptide). Takes place on ribosomes, using the information encoded in messenger RNA. RNA (ribonucleic acid) • An often single stranded nucleic acid whose nucleotides use ribose rather than deoxyribose and in which the base uracil replaces thymine found in DNA. Serves as genome from some viruses. ( See rRNA, tRNA, mRMA, and ribozyme.) promoter • The region of an operon that acts as the initial binding site for RNA polymerase. RNA polymerase • An enzyme that catalyzes the formation of RNA from a DNA template. messenger RNA (mRNA) • A transcript of one of the strands of DNA; carries information (as a sequence of codons) for the synthesis of one or more proteins. codon
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key terms ch12 - CHAPTER 12 TERMS central dogma The...

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