ANS CH385 2008-1 WPR 2

ANS CH385 2008-1 WPR 2 - APPROVED SOLUTION CADET _SECTION _...

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APPROVED SOLUTION CADET ______________________SECTION ____________ TIME OF DEPARTURE ______ DEPARTMENT OF CHEMISTRY AND LIFE SCIENCE CH385 Intro to Cell Biology, Fall 08-1 TEXT: Essential Cell Biology 2 nd ed. WRITTEN PARTIAL REVIEW II SCOPE: Lessons: 14-24 29 October 2007 References Permitted: None INSTRUCTIONS 1. Do not mark on this examination or open it until "BEGIN WORK" is given. You will have 55 minutes for the examination. 2. There are 10 pages in this writ (not including this cover sheet). Immediately report any illegible or missing pages to the professor. Write your name in the space provided on each page. (TOTAL WEIGHT 200 Points) PROBLEM VALUE CUT POINTS A 56 B 85 C 20 D 16 E 23 TOTAL SCORE (200 - CUT)
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APPROVED SOLUTION Cadet ____________________ Problem Weight A 56 Multiple choice questions testing simple concepts or terms. Circle the absolute best answer. (4 points each) 1. What are Okazaki fragments? a. The pieces of DNA formed by the action of restriction nucleases. b. Extrachromosomal, doubled-stranded, circular pieces of DNA found in prokaryotes. c. Sister chromatids that become separated during meiosis. d. Short segments of DNA containing an RNA primer and found on the lagging strand during DNA synthesis. 2. RNA molecules that serve as templates for protein synthesis are called a. messenger RNAs. b. ribosomal RNAs. c. small nuclear RNAs. d. cytoplasmic RNAs. 3. The synthesis of DNA from a strand of RNA is carried out by a. DNA polymerase III. b. RNA polymerase. c. reverse transcriptase. d. telomerase. 4. Portions of mRNA (in eukaryotes) that must be removed from the mRNA and are not translated are called a. codons. b. exons. c. introns. d. promoters. 5. Which of the following deletions will NOT change the reading frame of a gene? a. one nucleotide b. two nucleotides c. three nucleotides d. four nucleotides 6. What is a codon? a. A region of DNA coding for one protein. b. A sequence of three nucleotides on an mRNA that binds to specific tRNAs. c. A sequence of three nucleotides on a tRNA that binds to mRNA. d. A sequence of three nucleotides on a coding strand of DNA. CH385 Introduction to Cell Biology WPR 2 (Academic term 2008-1) 1
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APPROVED SOLUTION Cadet ____________________ 7. Taq polymerase is used in the polymerase chain reaction because it a. works best in aqueous solution. b. recognizes specific primer sequences. c. can make DNA sequences from complete RNA sequences. d. is stable at high temperatures. 8. In the nucleus, introns are removed from pre-mRNA transcripts by a. restriction endonucleases. b. splicing. c. editing. d. ligases. 9. Restriction nucleases a. cut DNA at very specific sequences. b. randomly cut DNA. c. are used to synthesis DNA. d. cut RNA at very specific sequences.
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This test prep was uploaded on 04/15/2008 for the course CH 385 taught by Professor Labare during the Fall '08 term at West Point.

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ANS CH385 2008-1 WPR 2 - APPROVED SOLUTION CADET _SECTION _...

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