Chemistry (PCHEM 2) exam questions \| \| \| \| \|
with correct answers \| \|
It is a comparatively weak antitubercular drug; its principal use is as the
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secondary drug to avoid resistance problems:
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a. Rifampicin
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b. Isoniazid
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c. Ethambutol
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d. Pyrazinamide - CORRECT ANSWERS ✔✔Ethambutol
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Responsible for the broad spectrum activity of amoxicillin and ampicillin
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a. Benzyl group
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b. Amino group
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c. Hydroxyl group
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d. Methyl group - CORRECT ANSWERS ✔✔Amino group
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It is the most powerful and active antitubercular drug
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,a. Rifampicin
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b. Isoniazid
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c. Ethambutol
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d. Pyrazinamide - CORRECT ANSWERS ✔✔Isoniazid
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Macrolides are basic due to \| \| \| \| \|
a. Dimethylamino
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b. Ketone group
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c. Large lactone ring
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d. Oleifinic groups - CORRECT ANSWERS ✔✔Dimethylamino
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MRSA is a developed antimicrobial resistance known worldwide. MRSA is an
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issue to what group of penicillin?
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a. Aminopenicillin
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b. Isoxazolylpenicillin
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c. Carboxypenicillin
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d. Ureidopenicillin - CORRECT ANSWERS ✔✔Isoxazolylpenicillin
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Bacitracin is a cyclic polypeptide antibiotic that prevents
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a. Phosphorylation of the phospholipid that carries the peptidoglycan subunit
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,b. Dephosphorylation of the phospholipid that carries the peptidoglycan
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subunit
c. Decarboxylation of the phospholipid that carries the peptidoglycan subunit
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d. Carboxylation of the phospholipid that carries the peptidoglycan subunit -
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CORRECT ANSWERS ✔✔Dephosphorylation of the phospholipid that carries
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the peptidoglycan subunit
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Which of the following statements is not a property of carbepenems?
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a. Meropenem is similar to imepenem in pharmacology and antimicrobial
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spectrum of activity \| \|
b. Imipenem is susceptible to beta lactamases and inactivated
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dehydropeptidases in renal tubules \| \| \|
c. Doripenem is the most recent carbepenem to be approved for use
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d. Ertapenem has a long half-life suitable for once-daily administration -
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CORRECT ANSWERS ✔✔Imipenem is susceptible to beta lactamases and
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inactivated dehydropeptidases in renal tubules
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Has a potent antibacterial activity with transient inhibition of beta-lactamase
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a. Class I
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b. Class II
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c. Class III
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d. Class IV - CORRECT ANSWERS ✔✔Class II
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, A prodrug of urinary antiseptic
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a. Methenamine
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b. Fosfomycin
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c. Nalidixic acid
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d. Nitrofurantoin
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Methenamine - CORRECT ANSWERS ✔✔Methenamine
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Four annulated six- membered rings
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a. Lactone
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b. Octahydronanaphthacene
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c. Dihydrothiazine
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d. Thiazoladine - CORRECT ANSWERS ✔✔Octahydronanaphthacene
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Tumor viruses
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a. HPV
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b. HIV
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c. HSV
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d. HAV - CORRECT ANSWERS ✔✔HPV
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Viral taxonomy based on genome
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