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AP Biology

AP Biology . Figure Assessement. D. A. E. . F. . B. LE 17-3. _________________ cell. G. H. . C. . TRANSLATION. I. . ________________ cell. Answer the following. What is the difference between the two processes in the previous slide?

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AP Biology

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  1. AP Biology Figure Assessement

  2. D. A. E. F. B. LE 17-3 _________________ cell G H. C. TRANSLATION I. ________________ cell

  3. Answer the following What is the difference between the two processes in the previous slide? Which cell do you think produces proteins at a faster rate? Provide a rationale for your answer.

  4. Transcription unit A. LE 17-7a-1 5¢ 3¢ 3¢ 5¢ DNA B. C.

  5. Answer the following • What step in transcription does the previous diagram illustrate? Explain this step. • Which strand of the DNA will be used for transcription? Why?

  6. Eukaryotic promoters Promoter 5¢ 3¢ 3¢ 5¢ A. Start point B. LE 17-8 5¢ 3¢ 3¢ 5¢ Additional transcription factors 5¢ 3¢ 5¢ 3¢ 5¢ RNA transcript C.

  7. LE 17-9 Protein-coding segment 5¢ B. codon D. codon 3¢ UTR A. UTR 5¢ C.

  8. RNA transcript (pre-mRNA) 5¢ Exon 1 Intron Exon 2 Protein Other proteins snRNA A. LE 17-11 B. 5¢ Cut-out intron mRNA 5¢ Exon 1 Exon 2

  9. Answer the following • What is the significance of the process of the previous slide? • Would you consider the excised material to be junk? Why or why not?

  10. Amino acid Aminoacyl-tRNA synthetase (enzyme) LE 17-15 Pyrophosphate Phosphates tRNA AMP Aminoacyl tRNA (an “activated amino acid”)

  11. Answer the following • View the previous slide. What type of molecule is the aminoacylsynthetase? What would be the result if this molecule were faulty?

  12. A. LE 17-16b B. C. D. mRNA binding site E. Schematic model showing binding sites

  13. Answer the following • Explain the function of the following from the previous slide. Be sure to include your label as well: • A. • C. • D.

  14. Large ribosomal subunit LE 17-17 P site Met Met Initiator tRNA GTP GDP A E mRNA 5¢ 5¢ 3¢ 3¢ Start codon Small ribosomal subunit mRNA binding site

  15. Answer the following Identify and explain the process in the previous slide.

  16. Amino end of polypeptide E 3¢ mRNA P site A site Ribosome ready for next aminoacyl tRNA 5¢ GTP LE 17-18 2 2 GDP E E P A P A GDP GTP E P A

  17. Answer the following • Identify and explain the process in the previous slide.

  18. LE 17-19 Free polypeptide A. 5¢ 3¢ 3¢ 3¢ 5¢ 5¢ Stop codon (UAG, UAA, or UGA)

  19. Answer the following • Identify and explain the process in the previous slide.

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