Final+Lecture+D+v+A+key

Final+Lecture+D+v+A+key - Your Initials Name ID Seat #...

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Your Initials Name Version A key ID Seat # 1. Ensure that you are sitting at your assigned seat. 2. Record your Name, Student ID # and Seat # on the first page of the exam booklet. Initial all other pages. 3. Bubble in your student ID # on the scantron card AND WRITE your name and ID. 4. For multiple choice questions, only use pencils. 5. Keep your student ID out and visible. We will be checking during the exam. Acts of dishonesty during the examination will result in disqualification (score of 0 points) and a permanent letter added to your university transcript file. EXAM VERSION A Bio 93 Fall 2007 Final Exam Section D December 10, 2007 1
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Your Initials Part I: Multiple Choice 1. I am taking Version A a. 2. In the Meselson Stahl experiment, a cesium chloride density gradient was used to: a. separate DNA into two strands b. Separate DNA on the basis of it content of 15N or 14N c. Label phage DNA with 32P d. Label phage DNA with 35S e. Demonstrate conservative DNA replication 3. Which of the following is true about the genetic code? a. It holds for eukaryotes only b. It is ambiguous c. It relies on codons containing pairs of nucleotides d. There are three start codons e. It has redundancy 4. Which of the following is not involved in transcription? a. DNA polymerase b. Transcription factors c. TATA box d. RNA e. DNA 5. The anti-codon that translates the genetic code is found on: a. Ribosomal RNA b. The 3’ end of the mRNA c. The terminator region of the mRNA d. Transfer RNA e. The signal peptide 6. Which of the following it true about transcription of prokaryotic DNA? a. It only occurs in the nucleus b. RNA polymerase binds directly to the promoter c. It requires addition of the 3’ poly A tail d. It requires addition of the 5” poly A tail e. It requires addition of a signal recognition particle 7. Gene expression levels are predominantly controlled at the level of: a. DNA replication b. Transcription c. Translation d. Ribosomes e. Addition of the 5’ cap and poly A tail 8. A mouse gene isolated from genomic DNA is cloned into a bacterial cell. The resulting mRNA is longer than that seen for the same gene in mice. What is the best 2
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Your Initials explanation? a. The bacterial cell adds additional control elements to the mRNA b. The bacterial cell cannot transcribe the exons. c. Bacterial mRNA is less stable than eukaryotic mRNA. d. Chromatin packing is less dense in prokaryotes. e. Bacterial cells do not remove introns from mRNA. 9. Which of the following is true about enhancers? a. They are regions of DNA that are distal control elements. b. They are proteins with a helix-turn-helix motif. c. They are required for prokaryotic transcription. d. They must be transcribed before mRNA can be translated. e.
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This note was uploaded on 07/27/2008 for the course BIO SCI 05115 taught by Professor Mcnulty during the Summer '08 term at UC Irvine.

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Final+Lecture+D+v+A+key - Your Initials Name ID Seat #...

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