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Home⇒ Medical Science⇒ Microbiology⇒ Antimicrobial chemotherapeutic agents
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ Which of the following tests is used to determine the minimal lethal concentration? All of these [other wrong options] [Discuss in forum] Broth dilution test Agar dilution test Dilution susceptibility tests |
Q22 ⇒ The larger the __________ , the better the chemotherapeutic agent. therapeutic index [other wrong options] [Discuss in forum] therapeutic dose selective toxicity spectrum |
Q23 ⇒ Nystatin is a drug used for treatment of diseases caused by yeast [other wrong options] [Discuss in forum] gram negative bacterium gram positive bacterium protozoan |
Q24 ⇒ Which of the following is not β-lactamase-resistant penicillin? Carbenicillin [other wrong options] [Discuss in forum] Oxacillin Nafcillin Methicillin |
Q25 ⇒ Which antibiotic has a beta-lactam ring? Penicillin [other wrong options] [Discuss in forum] Cephalosporin Tetracycline Streptomycin |
Q26 ⇒ Fluoroquinolones are antibiotics which inhibit DNA gyrase [other wrong options] [Discuss in forum] DNA polymerase RNA polymerase Cross-linking of peptidoglycan |
Q27 ⇒ Which of the following antibiotics can't be used for treatment of infections with β-lactamase-producing Staphylococcus aureus? Piperacillin [other wrong options] [Discuss in forum] Vancomycin Ampicillin/sulbactam Cephalothin |
Q28 ⇒ The third generation cephalosporin agents is cefotaxime [other wrong options] [Discuss in forum] cefoxitin cephalothin cephalexin |
Q29 ⇒ The antibiotics not having good activity against Enterobacteriaceae is clindamycin [other wrong options] [Discuss in forum] cefoxitin trimethoprim-sulphamethoxazole ciprofloxacin |
Q30 ⇒ The compound(s) which act(s) as metabolic antagonist is/are both (a) and (b) [other wrong options] [Discuss in forum] trimethoprim sulphonamides none of these |
Q31 ⇒ By which of the following means antifungal chemotherapeutic agents may affect fungi? all of these [other wrong options] [Discuss in forum] Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis Interfere with normal nucleic acid synthesis Interfere with ergosterol biosynthesis and thus alter the structure of the cytoplasmic membrane as well as the function of several membrane-bound enzymes like those involved in nutrient transport and chitin synthesis |
Q32 ⇒ Which of the following group is not the carbohydrate containing antibiotic? Erythromycin & candicidin [other wrong options] [Discuss in forum] Streptomycin & Streptothricin Vancomycin & Moenomycin Everninomycin & Nogirimycin |
Q33 ⇒ Which of the following is not a semi synthetic chemotherapeutic agent? Penicillin [other wrong options] [Discuss in forum] Ampicillin Carbenicillin Sulfonamide |
Q34 ⇒ The scientist who first discovered the substance penicillin was Alexander Fleming [other wrong options] [Discuss in forum] Joseph Lister Paul Ehrlich none of these |
Q35 ⇒ Vancomycin inhibits peptidoglycan synthesis by binding D-alanyl - D-alanine [other wrong options] [Discuss in forum] alanine racemase D-alanyl - D-alanine synthetase amidase |
Q36 ⇒ Novobiocin can be used against all of these [other wrong options] [Discuss in forum] gram +ve Staphylococci gram -ve Meningococci & Gonococci Haemophilus |
Q37 ⇒ The susceptibility of a microorganism to antibiotics and other chemotherapeutic agents can be determined by using both (a) and (b) [other wrong options] [Discuss in forum] tube dilution technique paper disk plate none of these |
Q38 ⇒ The nitrofurans differ from the antibiotics in that they do not occur naturally [other wrong options] [Discuss in forum] occur naturally are antimicrobial drugs all of these |
Q39 ⇒ The antibiotics not clinically useful for Pseudomonas aeruginosa infection is trimethoprim-sulphamethoxazole [other wrong options] [Discuss in forum] aminoglycosides ceftazidime piperacillin |
Q40 ⇒ Both penicillin and fluoroquinolones bind to and inactivate a bacterial protein [other wrong options] [Discuss in forum] inhibit the cross-linking of peptidoglycan are inactivated by β-lactamase must be transported into the cytoplasm in order to act |
Or |