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
- ßßß-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. Pneunocci
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 resistang 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 - â-lactum 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 cox sack virus ✔️
b. Reovirus
c. Polyomavirus
d. Cytomegalovirus - Human papillomavirus causes following tumors:
a. Hepatic carcinoma ✔️
b. Cervical cancer
c. Condyloma acuminatum
d. Plantar wart - 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. Poxyviruses
c. Heepes simplex virus
d. Retroviruses
e. All of these ✔️ - Following virus is known to establish latent infections:
a. Adeno virus
b. Varicella-zoster virus
c. Cytomegalovirus
d. Hepes 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 â 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 ThayerMartin 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. Trepanema Pallidum
b. M.tuberculosis
c. Clostridium novyl
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 ß prophase ✔️ - 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. Necatur americanes ✔️
c. Loa loa
d. Trichinella spiralis - Which of the following amoeba does not live in large intestine ?
a. Entamoeba coli
b. Entamoeda 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. Hutchiso’s teeth - Streptococcus pyogens produce infection –
a. Streptococcal sore throat ✔️
b. Acute glomerulo nephritis
c. Rheumatic fever
d. None of these - Salmonella which can cause prolong septicaemia.
a. Salmonella anetum
b. Salmonella cholerasuis ✔️
c. Salmonella typhimurium
d. Salmonella entritidis - 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. Cl.deficile
d. Cl.perfringens ✔️ - Causative organism of whooping cough is
a. Bordetella pertussis ✔️
b. Bordetella parapertussis
c. Bordetella bronchi septica
d. None of these - Pfeiffer phenomenon is related to
a. Vibrio cholerae ✔️
b. B.anthrax
c. Rickettsial pox
d. All of these
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.
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