Sample Exam 2 - General Microbiology - Examination 2...

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General Microbiology - Examination 2 Version F MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) MicroRNAs are a newly discovered type of RNA that are able to complementary pair with a specific gene’s mRNA and promotes the destruction of that mRNA. What would you expect concerning the translation of that gene? A) More of the DNA will be made B) Less of the protein will be made C) The protein will be exported from the cell D) More of the protein will be made E) The same amount of protein will be made 2) Quaternary ammonium compounds are effective against all the following organisms EXCEPT: A) Bacillus cereus B) Staphylococcus aureus C) Staphylococcus epidermidis D) Bacillus subtilis E) Pseudomonas aeruginosa 3) Which of the following is NOT a mode of action for antimicrobial drugs? A) Inhibition of protein synthesis B) Injury to the plasma membrane C) Inhibition of cell wall synthesis D) Inhibition of nucleic acid synthesis E) Injury to the endoplasmic reticulum 4) Which is NOT true concerning enzymes? A) They contain an active site where the catalysis reaction takes place B) They can be inactivated by high temperatures and low pH C) They lower the activation energy of chemical reactions D) They become nonfunctional after they catalyze one reaction E) They can utilize cofactors and coenzymes 5) Which of the following is a mechanism of drug resistance? A) Destruction or inactivation of the drug B) Increased permeability of the cell wall C) Making the target site more accessible to the drug D) Increased rate of drug internalization E) Synergism with other antibiotics 6) Which of the following is MISMATCHED? A) Ampicillin - inhibits cell wall synthesis - antibacterial B) Ketoconazole - inhibits ergosterol biosynthesis - antifungal C) Niclosamide - prevents ATP generation - antihelminthic D) Chloramphenicol - injures plasma membrane - antibacterial E) Acyclovir - inhibits DNA synthesis - antiviral 1
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7) Mesophiles live best at what temperature (in Celsius)? A) 95C B) 35C C) 45C D) 0C E) 20C 8) In order for Penicillin to be effective. .. A) Cells must be actively dividing B) Cell walls cannot contain peptidoglycan C) Cells must be gram negative D) Cells must be making endospores E) Cells must be in a hypertonic environment 9) You have just isolated a strict (or obligate) anaerobe, which can only grow at the bottom of a thioglycollate tube. You expect this bacterium to produce A) Both Catalase and Superoxide dismutase B) Superoxide dismutase C) Catalase D) Neither Catalase nor Superoxide dismutase 10) Which of the following is NOT an end-product of fermentation? A) Acetone B) Glycerol C) Ethyl alcohol D) Pyruvic acid E) Lactic acid 11) Aerobic respiration differs from anaerobic respiration in which of the following respects? A) Aerobic respiration produces more ATP.
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This note was uploaded on 12/29/2010 for the course BIOL 210 taught by Professor Gutiérrez during the Spring '10 term at Coastline Community College.

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Sample Exam 2 - General Microbiology - Examination 2...

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