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RNA & Protein Synthesis

Transcription of DNA into RNA and translation of RNA into proteins
by

Cindy Hardesty

on 3 October 2011

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Transcript of RNA & Protein Synthesis

Protein Synthesis Transcription Translation Makes mRNA from DNA Occurs in the nucleus The goal is to make protein! mRNA is turned into an amino acid chain Occurs on a ribosome in the cytoplasm So...overall Genes are coded DNA instructions that control the production of proteins Genetic messages can be decoded by copying part of the nucleotide sequence from DNA into RNA.
RNA is a polymer made of nucleotides too! How is RNA different from DNA? The sugar is ribose instead of deoxyribose.
RNA is generally single-stranded.
RNA contains uracil in place of thymine. Three types of RNA:
messenger RNA (mRNA)
ribosomal RNA (rRNA)
transfer RNA (tRNA) carries copies of instructions for assembling amino acids into proteins. along with protiens make up ribosomes During protein construction, carries (transfers) each amino acid to the ribosome A codon is made of three consecutive nucleotides on mRNA that code for a particular amino acid RNA Requires the enzyme RNA polymerase Promoters are signals on DNA that indicate to the enzyme where to bind to make RNA Messenger RNA is transcribed in the nucleus, and then enters the cytoplasm where it attaches to a ribosome.
Full transcript