BIO188 Final Part 1 Sample 1 Key S10

BIO188 Final Part 1 - BIO188 Final Part 1 Version A This exam contains 45 questions on 9 pages Each question has the same value Fill in your name

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1 BIO188 Final Part 1 – Version A This exam contains 45 questions on 9 pages. Each question has the same value. Fill in your name, subject, today’s date, “PART 1” and indicate that you have version “A” on your Scantron sheet before you begin. Read each question carefully, think before you answer and mark the letter corresponding to the SINGLE most correct answer on the scantron sheet. Use a No. 2 pencil only. Make dark marks. Erase any changes completely or fill in a new scantron sheet. Put your name on the question sheet and return it at the end of the exam. 1. According to Beadle and Tatum's hypothesis, how many genes are necessary for the pathway drawn above? A. 0 B. 1 C. 2 D. 3 E. It cannot be determined from the pathway. 2. What does the operon model attempt to explain? A. the coordinated control of gene expression in bacteria B. bacterial resistance to antibiotics C. how genes move between homologous regions of DNA D. the mechanism of viral attachment to a host cell E. horizontal transmission of plant viruses 3. The use of computer programs to search for genes, compare genomes and assemble genomes is called: A. proteomics B. functional genomics C. microarrays D. bioinformatics E. the help desk 4. The tryptophan operon is a repressible operon that is A. permanently turned on. B. turned on only when tryptophan accumulates in the cell. C. turned off only when glucose accumulates in the cell. D. turned on only when glucose accumulates in the cell. E. turned off whenever tryptophan accumulates in the cell.
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2 5. A mutation in which of the following parts of a gene is likely to be most damaging to a cell? A. intron B. exon C. 5' UTR D. 3' UTR E. All would be equally damaging. 6. A particular triplet of bases in the template strand of DNA is 5'-AGT-3'. The corresponding codon for the mRNA transcribed is A. 3'-UCA-5' B. 3'-UGA-5' C. 5'-TCA-3' D. 3'-ACU-5' E. either UCA or TCA, depending on wobble in the first base. 7. Altering patterns of gene expression in prokaryotes would most likely serve the organism's survival in which of the following ways? A. organizing gene expression so that genes are expressed in a given order B. allowing each gene to be expressed an equal number of times C. allowing the organism to adjust to changes in environmental conditions D. allowing young organisms to respond differently from more mature organisms E. allowing environmental changes to alter the prokaryote's genome 8. Which of the following is true for both prokaryotic and eukaryotic gene expression? A. After transcription, a 3' poly-A tail and a 5' cap are added to mRNA. B. Translation of mRNA can begin before transcription is complete.
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This note was uploaded on 05/18/2010 for the course BIO 188 taught by Professor Capco during the Spring '08 term at ASU.

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BIO188 Final Part 1 - BIO188 Final Part 1 Version A This exam contains 45 questions on 9 pages Each question has the same value Fill in your name

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