5000 Plus MCQs for Lab Technician and Technologists are designed to test the knowledge and proficiency of laboratory professionals who work in the field of clinical laboratory science. These questions cover a wide range of topics related to laboratory science, including anatomy, physiology, microbiology, chemistry, and hematology.
3601 to 3650 MCQs for Lab Technician and Technologist Exam Preparation
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Questions 3601 to 3650
ß-lactum ring is present in
- a) Erythromycin
- b) Penicillin
- c) Tetracyclins
- d) Chloramphenicol
All of the following drugs act on cell membrane, except
- a) Novobiocin
- b) Nystatin
- c) Chloromycetin
- d) Colicins
Cycloserine related to the amino acid in structure
- a) Serine
- b) Aspergine
- c) Alanine
- d) None of these
In Tuberculosis therapy mainly used antibiotic is
- a) Penicillin
- b) Streptomycin
- c) Chloramphenol
- d) Cycloserine
The antibacterial action of penicillin is due to its effect on
- a) Cell membrane permeability
- b) Cell wall synthesis
- c) DNA synthesis
- d) Protein synthesis
The antibiotic produced from Bacillus subtilis is
- a) Vancomycin
- b) Bactiracin
- c) Both a and b
- d) None of these
Bacitracin sensitivity test is done for
- a) Pneumococci
- b) Group ‘A’ Streptococci
- c) Gonococci
- d) Staphylococci
The effect of antibiotics on micro organisms is mainly due to
- a) Inhibition of cell-wall synthesis
- b) Damage to the cytoplasmic membrane
- c) Inhibition of nucleic acid and protein synthesis
- d) All of the above
The antibiotic acting on cell wall is
- a) Penicillin
- b) Bacitracin
- c) Cyclosporin
- d) All of the above
Erythromycin belongs to chemical class of antibiotics
- a) â-lactose
- b) Tetracyclines
- c) Macrolides
- d) Aminoglycosides
Bacterial resistance to antibiotics is transmitted by
- a) Transduction
- b) Transformation
- c) Mutation
- d) Plasmids
Erythromycin inhibits protein synthesis by
- a) Attaching to 30 S ribosome unit
- b) Attaching to 50 S unit or ribosome
- c) By the attachment to t-RNA
- d) By the attachment to m-RNA
The function of (THFA) Tetrahydrofolic acid coenzyme include
- a) Amino acid synthesis
- b) Thymidine synthesis
- c) Protein synthesis
- d) Both a and b
Resistant to drugs in tuberculosis develops by
- a) Transduction
- b) Transformation
- c) Conjugation
- d) Mutation
Which of the following is penicillinase resistant acid labile penicillin?
- a) Amoxycillin
- b) Cloxacillin
- c) Carbenicillin
- d) Methicillin
Which of the following does not inhibit cell wall synthesis?
- a) Penicillin
- b) Carbenicillin
- c) Amikacin
- d) Vancomycin
The anti tumor antibiotics act by inhibiting
- a) Cell wall synthesis
- b) RNA synthesis
- c) Cell membrane synthesis
- d) The DNA structure & function
Drug resistance to sulphonamides is due to
- a) Production of PABA
- b) Folic acid synthetase
- c) Drug alteration
- d) Low affinity for drug synthesis by bacteria
Amoxycillin is combined with clavulanic acid to inhibit
- a) DNA gyrace
- b) Cell synthesis
- c) Protein synthesis
- d) ß-lactamase enzymes
Drug of choice for methicillin resistant Staph. aureus is
- a) Ampicillin
- b) Erythromycin
- c) Neomycin
- d) Vancomycin
Nalidixic acid activity is due to
- a) The inhibition of DNA synthesis
- b) Inhibition of protein synthesis
- c) The inhibition of cell wall synthesis
- d) Both b and c
The best test for the susceptibility of a microorganism to antibiotics and other chemotherapeutic agents
- a) Tube-dilution test
- b) Paper-disc test
- c) Both a and b
- d) None of these
The smallest amount of chemotherapeutic agents required to inhibit the growth of the organism in Vitro is known as
- a) MIC (minimum inhibitory concentration)
- b) Thermal death point (TDP)
- c) Death rate
- d) None of these
Clear-zones formation around antibiotic disc is due to
- a) Growth of the bacterium surrounding of the disc
- b) Lysis of the bacterial cells surrounding the disc
- c) The destruction of paper disc (antibiotic)
- d) None of these
Bacitracin is obtained from
- a) B. subtilis
- b) B. anthracis
- c) B. cereus
- d) B. anthracoid
Vancomycin is obtained from
- a) Streptococcus species
- b) Aspergillus niger
- c) Streptomyces orientalis
- d) Bacillus anthracis
β-lactam antibiotics are
- a) Penicillin
- b) Cephalosporin
- c) Both a & b
- d) None of these
Epidemic pleurodynia and myocarditis of new born infants are both caused by
- a) Group B coxsackie virus
- b) Reovirus
- c) Polyomavirus
- d) Cytomegalovirus
Human papillomavirus causes following tumors
- a) Plantar wart
- b) Cervical cancer
- c) Condyloma acuminatum
- d) All Three Options
Viral infection is caused due to
- a) Acute self limited illness
- b) No apparent symptoms
- c) Chronic infection with persistent viral shedding
- d) All of these
Viruses which do not carry enzymes for DNA synthesis as a part of their virion are
- a) Hepatitis B virus
- b) Poxviruses
- c) Herpes simplex virus
- d) Retroviruses
Following virus is known to establish latent infections
- a) Adenovirus
- b) Varicella-zoster virus
- c) Cytomegalovirus
- d) Herpes simplex virus
- e) All of these
Viruses which have teratogenic property are
- a) Herpes simplex virus
- b) Cytomegalovirus
- c) Rubella virus
- d) All of these
Kawasaki syndrome is
- a) Most prevalent in Japan and Hawaii
- b) Patients show rickettsia-like bacteria in skin biopsies
- c) Strain involved may be Propionibacterium
- d) All of these
Mode of action of quinolone antibiotics on growing bacteria was thought to be
- a) Inhibition of β-lactamase
- b) Prevention of the cross linking of glycine
- c) Inhibition of DNA gyrase
- d) Inhibition of reverse transcriptase
The role that human play in the plague life cycle is
- a) Secondary reservoir
- b) Primary transmission vector
- c) Primary host
- d) Accidental intruder in rat flea cycle
- e) None of these
Patient with presence of penile chancre should be advised by physician
- a) To take rest at home
- b) To swab the chancre and culture on Thayer-Martin agar
- c) To Gram stain the chancre fluid
- d) To repeat VDRL test in 10 hours
- e) Perform dark field microscopy for treponemes
Which organism is responsible for causing fever to a man dealing with goats?
- a) Treponema pallidum
- b) M. tuberculosis
- c) Clostridium novyi
- d) Brucella melitensis
- e) None of these
Diphtheria toxins are produced from the strains of C.diphtheriae, which are
- a) Encapsulated
- b) Sucrose fermentors
- c) Of the mitis and strain
- d) Glucose fermentors
- e) Lysogenic for β prophage
Skin of the healthy person has normal microbial flora which includes
- a) Enterobacteriaceae
- b) Aerobic diphtheria bacilli
- c) Anaerobic diphtheriae bacilli
- d) Nonhemolytic staphylococci
- e) All of these
Which of the following organisms can infect humans if improperly cooked meat is used?
- a) Trichinella spiralis
- b) Taenia saginata
- c) Taenia solium
- d) Diphyllobothrium latum
- e) Both a and c
The parasite related to Ancylostoma duodenale is
- a) Wuchereria bancrofti
- b) Necator americanus
- c) Loa loa
- d) Trichinella spiralis
Which of the following amoeba does not live in large intestine?
- a) Entamoeba coli
- b) Entamoeba histolytica
- c) Endolimax nana
- d) Entamoeba gingivalis
Which of the following is not related to congenital syphilis?
- a) Aneurysm
- b) Saddle nose
- c) Still birth
- d) Hutchinson’s teeth
Streptococcus pyogenes produce infection
- a) Streptococcal sore throat
- b) Acute glomerulonephritis
- c) Rheumatic fever
- d) None of these
Salmonella which can cause prolonged septicaemia
- a) Salmonella anetum
- b) Salmonella cholerasuis
- c) Salmonella typhimurium
- d) Salmonella enteritidis
E.coli produce which type of toxins?
- a) Exotoxins
- b) Endotoxins
- c) Leucocidin
- d) Both a and b
Main causative organism of gas gangrene is
- a) B. anthrax
- b) Clostridium tetani
- c) Clostridium difficile
- d) Clostridium perfringens
Causative organism of whooping cough is
- a) Bordetella pertussis
- b) Bordetella parapertussis
- c) Bordetella bronchiseptica
- d) None of these
Causative organism of whooping cough is
- a) Bordetella pertussis
- b) Bordetella parapertussis
- c) Bordetella bronchiseptica
- d) None of these
Answer Key Summary
The questions are typically designed to assess the technical skills and knowledge required for the laboratory profession, including the ability to analyze laboratory test results, perform laboratory procedures, and maintain laboratory equipment.
To prepare for these MCQs, candidates should have a thorough understanding of the key concepts and principles of laboratory science. They should also be familiar with common laboratory equipment and procedures, as well as laboratory safety protocols.
Candidates may also benefit from studying specific laboratory science textbooks or taking online courses that cover the material tested in the MCQs. Additionally, practicing sample MCQs and reviewing the answers can help candidates identify areas where they may need to improve their knowledge or skills.
Overall, the MCQs for lab technologists are designed to be challenging and comprehensive, requiring candidates to demonstrate a high level of proficiency in the field of laboratory science.
