The most important mechanism of concurrent
acquisition of multidrug resistance among bacteria
is:
A. Mutation
B. Conjugation
C. Transduction
D. Transformation

1 Answer

Answer :

B. Conjugation

Related questions

Description : Of the following which is the most important mechanism of concurrent acquisition of multidrug resistance among bacteria ? (a) Mutation (b) Conjugation (c) Transduction (d) Transformation

Last Answer : Ans: B

Description : Penicillin resistance in staphylococci is acquired due to A.conjugation B.mutation C.transformation D.transduction

Last Answer : D.transduction

Description : Penicillin resistance in staphylococci is acquired due to A- conjugation B- mutation C- transformation D- transduction

Last Answer : transduction

Description : Which of the following is the cause for drug resistance in tuberculosis? A- Mutation B- Transduction C- Transformation D- Conjugation

Last Answer : Mutation

Description : The term used for acquisition of naked DNA from its environment and its incorporation in their genome by a bacterium is A.transformation B.lysogenic conversion C.conjugation D.transduction

Last Answer : A.transformation

Description : The term used for acquisition of naked DNA from its environment and its incorporation in theirgenome by a bacterium is A- transformation B- lysogenic conversion C- conjugation D- .transduction

Last Answer : transformation

Description : The term used for acquisition of naked DNA from its environment and its incorporation in their A- transformation B- lysogenic conversion C- conjugation D- transduction

Last Answer : transformation

Description : The most common mechanism of development of resistance to fluoroquinolones is: A. Chromosomal mutation altering affinity of target site B. Plasmid transfer C. Acquisition of drug destroying enzyme D. Acquisition of alternative metabolic pathway

Last Answer : A. Chromosomal mutation altering affinity of target site

Description : Widespread and prolonged use of an antibiotic leads to emergence of drug resistant strains because antibiotics: A. Induce mutation in the bacteria B. Promote conjugation among bacteria C. Allow resistant strains to propagate preferentially D. All of the above

Last Answer : C. Allow resistant strains to propagate preferentially

Description : The most important mechanism of bacterial resistance to an aminoglycoside antibiotic is: A. Plasmid mediated acquisition of aminoglycoside conjugating enzyme B. Mutational acquisition of aminoglycoside ... affinity of ribosomal protein for the antibiotic D. Mutational loss of porin channels

Last Answer : A. Plasmid mediated acquisition of aminoglycoside conjugating enzyme

Description : Which of the following is NOT a type of horizontal gene transfer between bacterial cells? a. transformation b. conjugation c. transduction d. translation

Last Answer : d. translation

Description : Which one of the following is NOT an example of genetic recombination? a. Conjugation b. Binary fission c. Transduction d. Transformation

Last Answer : c. Transduction

Description : Which of the following is NOT a mode of genetic exchange within a bacterial population? a) conjugation b) transduction c) transformation d) translation

Last Answer : ANSWER: D -- TRANSLATION

Description : The most important mechanism of bacterial resistance to an aminoglycoside antibiotic is (a) Plasmid mediated acquisition of aminoglycoside conjugating enzyme (b) Mutational acquisition of aminoglycoside ... affinity of ribosomal protein for the antibiotic (d) Mutational loss of porin channels

Last Answer : Ans: A

Description : The most important mechanism by which gram negative bacilli acquire chloramphenicol resistance is: A. Decreased permeability into the bacterial cell B. Acquisition of a plasmid encoded ... the bacterial ribosome for chloramphenicol D. Switching over from ribosomal to mitochondrial protein synthesi

Last Answer : B. Acquisition of a plasmid encoded for chloramphenicol acetyl transferas

Description : Widespread and prolonged used of an antibiotic leads to emergence of drug resistant strains because antibiotics (a) Induce mutation in the bacteria (b) Promote conjugation among bacteria (c) Allow resistant strains to propagate preferentially (d) All of the above

Last Answer : Ans: C

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus.

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus

Description : What is true of isonicotinic acid hydrazide (INH): A. An active transport mechanism concentrates INH inside sensitive mycobacteria B. Sensitive mycobacteria generate an active metabolite of INH through a catalaseperoxidase enzyme C. The most common mechanism of INH resistance is mutation i

Last Answer : D. Both 'A' and 'B' are correct

Description : Acquisition of inducible energy dependent efflux proteins by bacteria serves to: A. Secrete exotoxins B. Enhance virulance C. Lyse host tissue D. Confer antibiotic resistance

Last Answer : D. Confer antibiotic resistance

Description : Which of the following transport bacterial DNA to other bacteria via bacteriophages? A- Conjugation B- Transduction C- Transformation D- Translation

Last Answer : Transduction

Description : The following is true of multidrug therapy of leprosy except: A. It has been highly successful in paucibacillary but not in multibacillary cases B. Relapse rate is very low in both paucibacillary ... use once a month D. Prevalence of lepra reaction is not higher compared to dapsone monotherapy

Last Answer : A. It has been highly successful in paucibacillary but not in multibacillary cases

Description : he multidrug therapy of leprosy is superior to monotherapy on the following account(s): A. It prevents emergence of dapsone resistance B. It is effective in cases with primary dapsone resistance C. It shortens the total duration of drug therapy and improves compliance D. All of the above

Last Answer : D. All of the above

Description : Multidrug resistant (MDR) tuberculosis is defined as resistance to: A. Any two or more antitubercular drugs B. Isoniazid + any other antitubercular drug C. Isoniazid + Rifampin + any one or more antitubercular drugs D. All five first line antitubercular drugs

Last Answer : C. Isoniazid + Rifampin + any one or more antitubercular drugs

Description : The following is true of mefloquine: A. P. falciparum does not develop resistance to mefloquine B. Concurrent use of β blockers with mefloquine is contraindicated C. Neuropsychiatric reactions are the most important adverse effects of mefloquine D. All of the above

Last Answer : C. Neuropsychiatric reactions are the most important adverse effects of mefloquine

Description : Transfer of genetic information from one bacterium to another in the transduction process is through (a) bacteriophages released from the donor bacterial strain (b) another bacterium ... physical contact between donor and recipient strains (d) conjugation between opposite strain bacterium.

Last Answer : (a) bacteriophages released from the donor bacterial strain

Description : Transfer of genetic information from one bacterium to another in the transduction process is through (a) bacteriophages released from the donor bacterial strain (b) another bacterium ... physical contact between donor and recipient strains (d) conjugation between opposite strain bacterium.

Last Answer : (a) bacteriophages released from the donor bacterial strain

Description : F factor plasmids play a major role in A.conjugation B.replication C.transduction D.trasnscription

Last Answer : A.conjugation

Description : F factor plasmids play a major role in A.conjugation B.replication C.transduction D.trasnscription

Last Answer : conjugation

Description : The most important mechanism by which gram negative bacilli acquire chloramphenicol resistance is (a) Decreased permeability into the bacterial cell (b) Acquisition of a plasmid encoded ... bacterial ribosome for chloramphenicol (d) Switching over from ribosomal to mitochondrial protein synthesis

Last Answer : Ans: B

Description : The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes ... peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : B. They bind to 30S ribosomes and inhibit bacterial protein synthesis

Description : Use of artemisinin derivatives is restricted to treatment of multidrug resistant falciparum malaria because: A. Wide spread use for all cases of malaria may foster development of resistant strains B. They are not ... P.vivax C. They are more toxic than quinine D. All of the above are correct

Last Answer : A. Wide spread use for all cases of malaria may foster development of resistant strain

Description : Currently, under the mass programme (WHO/NLEP), the duration of multidrug therapy for multibacillary leprosy is: A. Two years fixed duration for all cases B. One year fixed duration for all cases C. ... for cases with bacillary index 3 or less and two years for cases with bacillary index 4 or more

Last Answer : B. One year fixed duration for all cases

Description : In the multidrug therapy of leprosy, rifampicin is given: A. Daily B. On alternate days C. Weekly D. Monthly

Last Answer : D. Monthly

Description : If a multibacillary leprosy patient treated with standard fixed duration multidrug therapy relapses, he should be treated with: A. The same rifampin + dapsone + clofazimine regimen B. ... + minocycline C. Clofazimine + ofloxacin + clarithromycin D. Ofloxacin + minocycline + clarithromycin

Last Answer : . The same rifampin + dapsone + clofazimine regimen

Description : Which fluoroquinolone is highly active against Mycobact. leprae and is being used in alternative multidrug therapy regimens: A. Norfloxacin B. Ofloxacin C. Ciprofloxacin D. Lomefloxacin

Last Answer : B. Ofloxacin

Description : Multidrug therapy with dapsone + rifampin ± clofazimine is the treatment of choice for: A. Multibacillary leprosy B. Paucibacillary leprosy C. Dapsone resistant leprosy D. All forms of leprosy

Last Answer : D. All forms of leprosy

Description : Clarithromycin is used for the following: A. Multidrug resistant M.tuberculosis infection B. M.avium complex infection in AIDS patient C. M.tuberculosis infection in a patient who develops jaundice due to first line antitubercular drugs D. Both ‘A’ and ‘B’ are correct

Last Answer : B. M.avium complex infection in AIDS patient

Description : Which of the following is not likely to be the cause of failure of antimicrobial therapy of an acute infection: A. Improper selection of drug and dose B. Acquisition of resistance during treatment C. Failure to drain the pus D. Uncontrolled diabetes mellitus

Last Answer : B. Acquisition of resistance during treatment

Description : The following is true of anti-H.pylori therapy except: A. It is indicated in all patients of peptic ulcer B. Resistance to any single antimicrobial drug develops rapidly C. Concurrent ... efficacy of the regimen D. Colloidal bismuth directly inhibits H.pylori but has poor patient acceptability

Last Answer : A. It is indicated in all patients of peptic ulcer

Description : What is transduction/transformation? -Biology

Last Answer : answer:

Description : Recombination of virus genomes occurs A- by transduction B- by transcription C- simultaneous infection of a host cell by two viruses with homologous chromosomes D- by transformation

Last Answer : simultaneous infection of a host cell by two viruses with homologous chromosomes

Description : In the extracellular medium, DNA-degrading enzymes would likely be to prevent transfer of DNA by A- conjugal transfer by a self-transmissible plasmid B- generalized phage transduction C- natural transformation D- none of the above

Last Answer : natural transformation

Description : Hershey and Chase experiment proving DNA as the genetic material was based on the principle a) Transduction b) transformation c) transcription d) translation

Last Answer : a) Transduction

Description : Select the correct Match : (1) Ribozyme - Nucleic acid (2) F2 x Recessive parent - Dihybrid cross (3) TH. Morgan - Transduction (4) G. Mendel - Transformation

Last Answer : (1) Ribozyme - Nucleic acid

Description : All of the following subserve as intracellular second messengers in receptor mediated signal transduction except: A. Cyclic AMP B. Inositol trisphosphate C. Diacyl glycerols D. G proteins

Last Answer : D. G proteins

Description : Receptors perform the following function/functions: A. Ligand recognition B. Signal transduction C. Both ligand recognition and signal transduction D. Disposal of agonists and antagonists

Last Answer : C. Both ligand recognition and signal transduction

Description : A bacterial cell that is transformed _____. a. Cannot Form A Conjugation Pilus. b. Has Undergone A Frameshift Mutation. c. Has Acquired Dna From The Environment. d. Will Probably Die Within 24 Hours.

Last Answer : c. Has Acquired Dna From The Environment.

Description : The receptor transduction mechanism with the fastest time-course of response effectuation is: A. Adenylyl cyclase-cyclic AMP pathway B. Phospholipase C-IP3: DAG pathway C. Intrinsic ion channel operation D. Protein synthesis modulation

Last Answer : C. Intrinsic ion channel operation