Presentation on theme: "RNARNA. PROTEIN SYNTHESIS The BIG Picture……. Objective: By the end of class today students will be able to change a DNA sequence into an PROTIEN sequence."— Presentation transcript:
Description DNA transcription is the process of creating messenger RNA (mRNA). Location DNA transcription occurs in the nucleus because that is where DNA is located.
How Transcription Works 1. The DNA strand unwinds 2. Complementary RNA nitrogenous bases match up with one side of the DNA strand 3. The RNA is released from the DNA strand. 4. The DNA rewinds. 5. The mRNA leaves the nucleus.
Interpreting the mRNA Strands of mRNA are divided into sections of 3 nitrogenous bases called codons. Codon – 3 bases that code for a specific amino acid.
Characteristics of tRNA tRNA has anticodons that compliment the mRNA codons tRNA is attached to an Amino acid that will form a protein chain.
Translation and Protein Synthesis Translation is the process of translating the genetic code of mRNA into tRNA. Protein Synthesis is the process of amino acids connected to tRNA bonding to form a protein. Translation and Protein Synthesis happen simultaneously.
Steps in Translation and Protein Synthesis 1.mRNA enters the ribosome 2.Complimentary tRNA attaches to the start codon on mRNA 3.The mRNA moves through the ribosome
Steps in Translation and Protein Synthesis (continued) 4.The next mRNA codon is matched with the complimentary tRNA 5.Amino acids connected to both tRNA strands connect to each other
Translation – Protein Synthesis (continued) 6.The process continues until a stop codon is reached, releasing the protein.