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TRANSCRIPTION AND TRANSLATION RNA single stranded helix made of nucleotides consisting of ribose sugar, phosphate group and a nitrogen base nitrogen bases adenine, uracil, cytosine and guanine occurs throughout the cell three types messenger RNA (mRNA) – leaves the nucleus and travels to ribosomes carrying the sequences of bases to assemble amino acids in a protein ribosomal RNA (rRNA) – located in the ribosome, serves as a dock for mRNA to be read by tRNA transfer RNA (tRNA) - matches up complimentary nitrogen bases and assembles sequence of amino acids transcription – making RNA from a DNA blueprint in the nucleus 1. Helicase enzyme unzips double stranded DNA molecule. 2. RNA polymerase enzyme assembles complimentary nitrogen bases (A-U, G-C) 3. mRNA results translation – mRNA is a template for tRNA to assemble sequences of amino acids to make a protein 1. mRNA travel to the ribosome and docks with rRNA 2. anti codon (3 complimentary bases) match with codon on mRNA. These 3 nitrogen bases on mRNA code for a specific amino acid. tRNA interprets this code and assembles the correct sequence of amino acids to make a certain protein. 3. Result is a protein being made