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RNA

RNA. Transcription, Translation and Protein Synthesis. Phosphate Group. O O=P-O O. Nitrogenous base (A, U , G, C ). 5. CH2. O. N. Sugar (ribose). C 1. C 4. C 3. C 2. RNA. RNA. Function: obtain information from DNA & synthesizes proteins.

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RNA

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  1. RNA Transcription, Translation and Protein Synthesis

  2. Phosphate Group O O=P-O O Nitrogenous base (A, U,G, C ) 5 CH2 O N Sugar (ribose) C1 C4 C3 C2 RNA

  3. RNA • Function: obtain information from DNA & synthesizes proteins

  4. 3 differences from DNA • Single strand instead of double strand • Ribose instead of deoxyribose • Uracil instead of thymine

  5. 3 types of RNA • Messenger RNA (mRNA)- copies information from DNA for protein synthesis Codon- 3 base pairs that code for a single amino acid. codon

  6. 3 types of RNA 2. Transfer RNA (tRNA)- collects amino acids for protein synthesis Anticodon-a sequence of 3 bases that are complementary base pairs to a codon in the mRNA

  7. 3 types of RNA 3. Ribosomal RNA (rRNA)- combines with proteins to form ribosomes

  8. Amino Acids • Amino acids- the building blocks of protein • At least one kind of tRNA is present for each of the 20 amino acids used in protein synthesis.

  9. Transcription - mRNA is made from DNA & goes to the ribosome Translation - Proteins are made from the message on the mRNA

  10. Transcription • In order for cells to make proteins, the DNA code must be transcribed (copied) to mRNA. • The mRNA carries the code from the nucleus to the ribosomes.

  11. Translation • At the ribosome, amino acids (AA) are linked together to form specific proteins. • The amino acid sequence is directed by the mRNA molecule. Amino acids ribosome

  12. Make A Protein • DNA sequence ATG AAA AAC AAG GTA TAG • mRNA sequence UAC UUU UUG UUC CAU AUC

  13. Make mRNA • mRNA sequence UAC UUU UUG UUC CAU AUC • tRNA sequence AUG AAA AAC AAG GUA UAG

  14. Make mRNA • tRNA sequence AUG AAA AAC AAG GUA UAG • Amino Acid sequence met lys asn lys val stop

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