Name key 1. Transcription, &Translation / Protein Synthesis Quiz Study guide (Quiz on Friday!!!) Complete the chart by defining each of the following, and identify the purpose for each: CELL DNA PROCESS Definition Purpose DNA Code of life 1. Pass genes from parent to offspring 2. Replication DNA making a copy of itself Transcription DNA making RNA (carry codes to) Make proteins (which make new cells) Pass on an exact copy of dna to new cells To make RNA, so that RNA can make proteins, and proteins make new cells Translation RNA making amino acids, which make proteins, therefore translation is translating rna into amino acids To “decode” or read DNA ( RNA ) 2. 3. 4. 5. What is a codon?_3 nitogen bases grouped together; each codon represents one amino acid Each codon is composed of 3 nitrogen bases. When translated, each codon represents one see above_____ ___________. What do we call an entire chain of amino acids?___poly peptide chain Write the complementary strand of the following DNA sequence: AGG-TCA-GCT-ACG-GGC-AAA-GUA (should have been GTA) TCC-AGT-CGA-TGC-CCG-TTT-CAT 6. Transcribe the original strand of DNA. UCC-AGU-CGA-UGC-CCG-UUU-CAU 7. Use the codon chart to translate your RNA sequence: Ser, Ser, Arg, Cys, Pro, Phe, His 8. Which of the following best describes the flow of information in the cell? A) mRNA DNA tRNA B) tRNA mRNA protein C) DNA mRNA protein D) protein DNA mRNA 9. Which of the following occur in the nucleus? (Circle ALL that apply) A) Replication B) Transcription C) Translation 10. Which process doubles the amount of DNA? A) Replication B) Transcription C) Translation 11. Which of the following is an end result of transcription? A) A protein B) A segment of mRNA C) A segment of DNA D) An enzyme 12. Name the 2 purines Adenine & Guanine 13. Name the 2 pyrimidines Thymine & cytosine 14. Use the chart at the bottom of the page (Figure 12-17) to transcribe, and then translate the following poly-peptide chain of amino acids: AGG-TTA-CCC-CCG-AGC-TTT-AUG UCC-AAU-GGG-GGC-UCG-AAA-UAC SERINE-ASPARAGANINE-GLYCINE-GLYCINE-SERINE-LYSINE-TYROSINE 15. Next, re-write the RNA that you transcribed BACKWARDS, so that instead of reading right-left, you translate the RNA from left to right. Write the amino acids you translated below: CAU-AAA-GCU-CGG-GGG-UAA-CCU HISTIDINE- ASPARAGANINE-Alanine-arginine-glycine-stop-proline 16. Are the amino acids different OR the same when you translate from left-right as when you translate right-left? Why? Different, because the leteers are re-arranged and therefore have new meaning. Two codons still represent the same amino acids, because they are same backwards (ex. GGG) 17. (CIRCLE ONE): Based on #15-16, would you infer that cells read DNA (RNA) in ONE direction or BOTH directions?