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Chapter 11.2: DNA to Protein

Chapter 11.2: DNA to Protein. Protein Overview. Made up of amino acids DNA codes for RNA which makes proteins. DNA vs RNA . Double stranded vs. Single stranded Deoxyribose sugar vs Ribose sugar Thymine vs Uracil A now bonds with U NOT with T in RNA. mRNA (messenger).

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Chapter 11.2: DNA to Protein

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  1. Chapter 11.2: DNA to Protein

  2. Protein Overview • Made up of amino acids • DNA codes for RNA which makes proteins

  3. DNA vs RNA • Double stranded vs. Single stranded • Deoxyribose sugar vs Ribose sugar • Thymine vsUracil • A now bonds with U NOT with T in RNA

  4. mRNA (messenger) • Travels from nucleus to cytoplasm • “Reads” DNA in nucleus • Brings message from nucleus to ribosome

  5. rRNA (ribosomal) • Found in ribosomes • Reads the message mRNA brought • Tells tRNA what to do • “Boss” of the RNA

  6. tRNA • Found in cytoplasm • Listens to rRNA • Brings correct amino acid to the ribosomes • Allows a protein to be built • “Workers” of RNA

  7. Transcription • Going from DNA to mRNA • AAATTTCCCGGG • UUUAAAGGGCCC • End result = One single stranded RNA

  8. Amino Acids • We have 20 amino acids in us • Every 3 nucleotides (letters) codes for 1 amino acid • Called a codon • EX: UUU = phenylalanine • 64 possible codons • Some codons code instructions, not amino acids • UAA = stop • AUG = start

  9. Translation • Going from mRNA to a protein • Happens in ribosomes

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