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 : 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 : Superinfections are more common with (a) Use of narrow spectrum antibiotics (b) Short courses of antibiotics (c) Use of antibiotics that are completely absorbed from the small intestines (d) Use of antibiotic combinations covering both gram positive and gram negative bacteria
Last Answer : Ans: D
Description : Prophylaxis antibiotic for anthrax is given to people with symptoms who have been in a defined hot zone for a period of a) 60 days. Those with symptoms who have been in the hot zone should ... . Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic
Last Answer : a) 60 days. Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic. The aim of prophylaxis is to assure that if spores were ... of mediastinal lymph node involvement should be treated with intravenous antibiotics and respiratory support, if needed.
Description : Superinfections are more common with: A. Use of narrow spectrum antibiotics B. Short courses of antibiotics C. Use of antibiotics that are completely absorbed from the small intestines D. Use of antibiotic combinations covering both gram positive and gram negative bacteria
Last Answer : D. Use of antibiotic combinations covering both gram positive and gram negative bacteria
Description : If a necrotizing soft tissue infection is considered, therapy mandates: a. Empiric administration of antibiotics active against gram-positive, gram-negative, and anaerobic bacteria b. Due to usually ... is mandatory d. The use of hyperbaric oxygen has been demonstrated to be clearly advantageous
Last Answer : Answer: a, c Identification of a necrotizing, soft tissue infection mandates immediate operative intervention with aggressive resection of all involved tissues and empiric ... remains without controlled trials demonstrating any additional benefits derived from hyperbaric oxygen therapy
Description : The main reason why antibodies could not solve all the problems of bacteria mediated disease is (a) decreased efficiency of the immune system (b) insensitivity of the individual ... development of mutant strains resistant to antibodies (d) inactivation of antibiotics by bacterial enzymes.
Last Answer : (c) development of mutant strains resistant to antibodies
Description : Appearance of antibiotic-resistant bacteria is an example of
Last Answer : Appearance of antibiotic-resistant bacteria is an example of A. Adaptive radiation B. ... existing variating the population D. Divergent evolution
Description : What is break point concentration of an antibiotic ? (a) Concentration at which the antibiotic lyses the bacteria (b) Concentration of the antibiotic which demarks between sensitive ... which overcomes bacterial resistance (d) Concentration at which a bacteriostatic antibiotic becomes bactericidal
Last Answer : Ans: B
Description : A medium would involve the addition of the antibiotic methicillin to identify methicillin-resistant bacteria. a. differential b. selective c. thioglycollate d. VBNC
Last Answer : b. selective
Description : What is break point concentration of an antibiotic: A. Concentration at which the antibiotic lyses the bacteria B. Concentration of the antibiotic which demarkates between sensitive ... which overcomes bacterial resistance D. Concentration at which a bacteriostatic antibiotic becomes bactericida
Last Answer : . Concentration of the antibiotic which demarkates between sensitive and resistant bacteria
Description : Organisms that normally inhabit the body a. include Treponema pallidum. b. cause endogenous diseases. c. may be detected by Donovan bodies. d. resist the effects of antibiotics.
Last Answer : b. cause endogenous diseases.
Description : _____ is the natural ability of an organism to have an inbuilt mechanism to resist and destroy the infection. a) antibiotic b)immunity c)antibodies d)none
Last Answer : b)immunity
Description : The use of prophylactic antibiotics has become commonplace. Which of the following statement(s) is/are true concerning the prophylactic use of antibiotics? a. The appropriate use of prophylactic ... d. The topical use of antimicrobial agents is of no advantage in the prophylactic setting
Last Answer : Answer: a Intravenous administration of an antibiotic is clearly indicated for patients undergoing clean contaminated operations. These antibiotics should be administered prior to surgery ... of antimicrobial agents is equivalent to the administration of intravenous antimicrobial agent antibiotics
Description : Which of the following statement(s) is/are true concerning the role of antibiotics in wound care? a. Systemic antibiotics are indicated for all open wounds b. Bacterial resistance can occur with ... of tissue on quantitative analysis d. Silver sulfadiazine is useful only for the management of burns
Last Answer : Answer: c The role of antibiotics in wound care is controversial. All open wounds are colonized with bacteria. Only when surrounding tissue is invaded (cellulitis) are systemic antibiotics clearly ... of relevant drug-resistant plasmids in bacteria, and its low cost make it a good choice
Description : New approaches to antibiotic therapy include a. Carbohydrate targets in the wall LPS. b. unregulating DNA replication. c. Discovering new and unique antibiotics. d. All of the above (A—C) are correct.
Last Answer : d. All of the above (A—C) are correct.
Description : A superinfection could arise from a. Using antibiotics when not needed. b. Using unnecessarily large doses of antibiotics. c. Stopping antibiotic treatment prematurely.. d. All of the above (A—C) are correct.
Last Answer : b. Using unnecessarily large doses of antibiotics.
Description : ttt of foliculitis after shaving the bread a- oral steroid b- topical steroid c -oral antibiotics may be there was topical antifungal but no topical antibiotic choice
Last Answer : c -oral antibiotics
Description : Methicillin resistant staphylococci do not respond to ß-lactam antibiotics because (a) They produce a ß-lactamase which destroys methicillin and related drugs (b) They elaborate an amidase which destroys ... low affinity for ß-lactam antibiotics (d) They are less permeable to ß-lactam antibiotics
Description : What is true of Quinupristin-Dalfopristin: A. It is a synergistic combination of two similar antibiotics B. It acts by inhibiting bacterial protein synthesis C. It is active against most resistant coccal infections D. All of the above are correct
Last Answer : D. All of the above are correct
Description : Methicillin resistant staphylococci do not respond to β-lactam antibiotics because: A. They produce a β-lactamase which destroys methicillin and related drugs B. They elaborate an amidase which destroys ... low affinity for β-lactam antibiotics D. They are less permeable to β-lactam antibiotics
Last Answer : C. They have acquired penicillin binding protein which has low affinity for β-lactam antibioti
Description : Can you please tell me more info into amyloid beta to be that could be used to treat antibiotic resistant super bugs?
Last Answer : December 11 11:pm was the episode. On CBC radio in the second half near the end of the episode.
Description : Spectinomycin is an aminoglycoside-like antibiotic indicated for the treatment of (a) Gram-negative bacillary septicemia (b) Tuberculosis (c) Penicillin-resistant gonococcal infections (d) Syphilis (e) Gram-negative meningitis due to susceptible organisms
Description : The Ames test is used to a. Identify Potential Human Carcinogens. b. Discover Auxotrophic Mutants. c. Find Pathogenic Bacterial Species. d. Identify Antibiotic Resistant Mutants.
Last Answer : a. Identify Potential Human Carcinogens.
Description : The treatment of Localised Juvenile Periodontitis is frequently supplemented with tetracycline because the flora involved is predominant: A. Aerobic B. Strictly anaerobic C. Facultative anaerobic D. Resistant to other antibiotic
Last Answer : C. Facultative anaerobic
Description : The following strategy will promote rather than curb emergence of antibiotic resistant micro-organisms: A. Whenever possible use broad spectrum antibiotics B. Prefer a narrow spectrum ... Prefer short and intensive courses of antibiotics D. Use antibiotic combinations for prolonged therapy
Last Answer : A. Whenever possible use broad spectrum antibiotics
Description : 8. The first r- DNA was constructed by linking antibiotic resistant gene with the native plasmid of a) Escherihia coli b) Salmonella typhimurium c) Acetobacter aceti d) Bacillus thuringiensis
Last Answer : Salmonella typhimurium
Description : What are the antibiotics obtained from bacteria? -Biology
Last Answer : answer:
Description : What is the cellular functions that occur when antibiotics attack a bacteria cell?
Last Answer : Need answer
Description : A diabetic develops a severe perineal infection with skin necrosis, subcutaneous crepitance, and drainage of a thin, watery, grayish and foul-smelling fluid. Management should consist of: a. Gram stain ... normal, healthy tissue can be achieved e. A colostomy is of little benefit in this situation
Last Answer : Answer: a, b, c, d The presence of severe perineal infection (referred to as Fournier gangrene when this process involves the perineum and scrotum in males) is associated with a ... often provides improved wound care and patient management, although it is not invariably a positive outcome
Description : Bacteria are more sensitive to antibiotics at which phase of growth curve? a. Decline phase b. Stationary phase c. Lag phase d. Log phase
Description : The most important mechanism by which tetracycline antibiotics exert antiimicrobial 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
Description : Which is the effect of antigen in an ill person? (1) It increases the production of W.B.C. (2) It increases the production of antibiotics (3) It increases the production of antiserum against bacteria (4) It prevents the growth of bacteria
Last Answer : (2) It increases the production of antibiotics Explanation: Vaccines containing antigens are introduced into the body, stimulating the immune system response by instructing B cells, with assistance from T cells, to ... , and send it to the T cells so that an immune system response can be mobilized.
Description : Antibiotics are products of (a) Bacteria and fungi (b) Fungi and parasites (c) Parasites and bacteria (d) Fungi and viruses
Last Answer : (a) Bacteria and fungi
Description : The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorisedas (a) cyanobacteria (b) archaebacteria (c) chemosynthetic autotrophs (d) heterotrophic bacteria.
Last Answer : (d) heterotrophic bacteria
Description : Bacteria are most sensitive to antibiotics at which phase of growth curve A Lag phase B Log Phase C Stationary phase D Phase of Decline
Last Answer : B Log Phase
Description : _______ is suspension of dead or weakened microbes. a) vaccine b)antibodies c)antibiotics d)bacteria
Last Answer : a) vaccine
Description : Aminoglycoside antibiotics exert the following action(s) on sensitive bacteria: A. Induce synthesis of defective proteins B. Make bacterial cell membrane more leaky C. Augment their own carrier mediated entry into the bacteria D. All of the above
Last Answer : D. All of the above
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 : The most abundant prokaryotes helpful to humans in marking curd from milk and in production of antibiotics are the ones categorised as (1) Heterotrophic bacteria (2) Cyanobacteria (3) Archaebacteria (4) Chemosynthetic autotrophs
Last Answer : (1) Heterotrophic bacteria
Description : Which is the effect of antigen in an ill person ? (1) It increases the production of W.B.C. (2) It increases the production of antibiotics (3) It increases the production of anti-serum against bacteria (4) It prevents the growth of bacteria
Last Answer : It increases the production of antibiotics
Description : Antibiotic resistance gene in bacteria -Biology
Description : Gense representing traits of antibiotic resistance occur in bacteria over
Last Answer : Gense representing traits of antibiotic resistance occur in bacteria over A. Nucleoid B. Plasmid C. Mesosome D. Both B and C
Description : The treatment of the following patient should include: a. Initial empiric therapy directed against both aerobes and anaerobes b. The addition of anti-fungal therapy in an elderly patient ... therapy is appropriate if the agents selected possess activity against both aerobic and anaerobic bacteria
Last Answer : Answer: a, e The primary treatment for a perforated viscus is surgical, however antimicrobial therapy is an extremely important adjunct. Empiric antibiotic therapy for secondary ... whereas longer periods are indicated for immunosuppressed patients and with patients with extensive contamination
Description : The following statement(s) is/are true concerning initial microbiologic diagnostic techniques. a. Appropriate expeditious transport of specimens to the microbiology laboratory is essential for obtaining accurate ... a 4-to 8-fold increase over the MIC to be considered clinically efficacious.
Last Answer : Answer: a, c, d Because most surgical infections are polymicrobial, specimens should be cultured for aerobic and anaerobic bacteria, as well as fungi. Although aerobic and aerotolerant ... fold increase over MIC during the peak serum level have been demonstrated to be clinically efficacious
Description : An antibiotic is - (1) achemical synthesized by a human cell against a microorganism (2) a chemical synthesised by amicro-organism against another micro-organisms (3) a substance produced by blood cells against bacteria (4) a substance produced by blood cells against infection.
Last Answer : (2) a chemical synthesised by amicro-organism against another microorganisms Explanation: An antibacterial is an agent that inhibits bacterial growth or kills bacteria. The term is often used ... by a microorganism that is antagonistic to the growth of other microorganisms in high dilution.
Description : What is an antibiotic? (1) A chemical compound produced by a living organism that inhibits the growth of other organisms (2) Acompound synthesised by a living organism that inhibits the ... compound inhibiting the growth of other organisms (4) Asynthetic compound inhibiting the growth of bacteria
Last Answer : (4) Asynthetic compound inhibiting the growth of bacteria Explanation: Antibiotics, also known as antimicrobial drugs, are drugs that fight infections caused by bacteria. Alexander Fleming discovered the ... (not produced by microorganisms) that can also kill or inhibit the growth of microbes.
Description : Which one of the following pairs is incorrectly matched as to antibiotic and use? a. Penicillin-gram-positive bacteria b. Nystatin-fungi c. Tetracycline-viruses d. Griseofulvin-fungi
Last Answer : c. Tetracycline-viruses
Description : The term antibiotic was coined by _________to refer to antimicrobial substances naturally derived from _______. a. Waksman; bacteria and fungi b. Domagk; other living organisms c. Fleming; fungi and bacteria d. Ehrlich; bacteria
Last Answer : c. Fleming; fungi and bacteria
Description : The following is true of vancomycin except: A. It is a bactericidal antibiotic active primarily against gram positive bacteria B. It acts by inhibiting bacterial protein synthesis C. It is an alternative to penicillin for enterococcal endocarditis D. It can cause deafness as a dose related toxicity
Last Answer : B. It acts by inhibiting bacterial protein synthesis