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.
2901 to 2950 MCQs for Lab Technician and Technologist Exam Preparation
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Questions 2901 to 2950
- The optimal time and temperature required for sterilization in an autoclave is_______?
- 140°C x 2 hrs. x 10 lbs pr.
- 121°F x 15 mts. x 15 lbs pr.
- 121°F x 15 sec. x 15 lbs pr.
- 121°C 15 mts. x 15 lbs pr. ✔️
- Most antibodies are produced in the________?
- Heart and the liver
- Brain and the meninges
- Thymus and the appendix
- Spleen and the lymph nodes ✔️
- Which of the following antibacterial substance is present in eggs and saliva ?
- Lysozyme ✔️
- Secretozyme
- Albumin
- Isozyme
- The major antiseptic value of soap lies in its ability to______?
- Kill mircobes
- Remove microbes ✔️
- Inhibit microbial growth
- Dehydrate microbial cells
- Multiple drug resistance of bacteria depends on which of the following________?
- Resistance transfer factor (RTF) ✔️
- Colicigenic factor (Col)
- Fertility factor (F+)
- All of the above
- All are not true for cultivation of anaerobic organisms except___?
- Incubator
- anaerobic jar ✔️
- Refrigerator
- Centrifuge
- Rideal Walker test is used to determine the efficiency of the_____?
- Disinfectant ✔️
- Moist heat sterilisation
- Antibiotics
- Dry heat sterilization
- Sterilization is_______?
- Pathogens killed but spores are not affected
- Only pathogenic micro-organisms killed
- Non-pathogenic killed
- All pathogenic and non-pathogenic microorganisms killed ✔️
- Compared with autoclave, use of a dry heat over for sterilization has the following disadvantages_______?
- Time-consuming ✔️
- Less effective
- Causes instruments to rust
- Causes sharp instruments to dull
- Which of the following is not a feature of anaphylaxis ?
- Delayed reaction ✔️
- Immediate reaction
- passive transfer by serum
- None of the above
- Bacterial spores are destroyed by______?
- Boiling at 100°C
- Disinfection by hypochlorite solution
- Autoclave ✔️
- Pasteurisation
- The Ig found in exocrine secretions is_______?
- IgG
- IgD
- IgM
- IgA ✔️
- he interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain_______?
- Lysosomes
- Proteolytic enzymes
- Lymphotoxins
- Vasoactive mediators ✔️
- Dark ground microscopy is useful to identify_____?
- Mycoplasma
- Chlamydiae
- Rickettsiae
- Spirochaetes ✔️
- The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is_______?
- 3 minutes ✔️
- 15 minutes
- 30 minutes
- 60 minutes
- The best sterilization method for a hand-piece is________?
- Ethylene oxide gas ✔️
- dry heat
- chemical vapour
- All of the above
- Example of immune complex hyper-sensitivity reaction is______?
- Atopic allergy
- Serum sickness ✔️
- Transfusion reaction
- Contact dermatitis
- The chemotactic factor is________?
- C2a
- C3b
- C4a
- C5a ✔️
- Steam under pressure in used in __ sterilization?
- Pasteurization
- Autoclave ✔️
- Kochs sterilizer
- hot air oven
- The predominant immunoglobulin in saliva is_______?
- IgA ✔️
- IgD
- IgE
- IgG
- All are true about legionella pneumophilia except_______?
- Aquatic bodies are main habitat
- It can replicate in amoeba
- Urine test is a reliable method
- Person to person transmission ✔️
- Each of the following viruses possesses an outer lipoprotein envelope except_______?
- Varicella Zoster Virus
- Papilloma Virus ✔️
- Influenza Virus
- Human immunodeficiency virus
- Actinomycosis is a_____?
- Aerobic bacterial disease
- Anaerobic bacterial disease ✔️
- Aerobic fungal disease
- Anaerobic fungal disease
- Which of the following is true about tetanus acquired through traumatic wound ?
- Clostridium tetani travels via the nerves to the anterior horn dells in spinal cord ✔️
- The tetanospasmin component of the exotoxin act on the post-synaptic neurones and prevents impulse transmission
- The patient should be given tetanus toxoid intravenously
- Causes positive Nagler reaction
- Pseudomonas aeruginosa________?
- Produces heat stable enterotoxin
- Causes Shangai fever ✔️
- Cannot be destroyed at 55 degree at 1 hr.
- Does not produce any pigment
- Which is not true about vibrio cholera_____?
- It is non-halophilic
- Grows on simple media
- Man is the only natural host
- Cannot survive in extracellular environment ✔️
- About Bacteroide True are all Except______?
- Susceptible to many antibiotics ✔️
- Present mainly in mixed infections
- Most common species is B fragilis
- Bile resistant anerobes
- About N. gonorrhoea, all are true except_______?
- Most common cause of urethritis is male
- All stains are highly susceptible to penicillin 11
- Wide spread axoregnic stains cause disseminated gonococcal infection
- Found exclusively in human beings.
- Dental Plaque adheres to tooth surface by______?
- Dextran ✔️
- Epithelial cells
- Bacteria
- Sucrose
- Mycobacterium tuberculosis is best demonstrated by_______?
- Gram’s stain
- H & E stain
- Ziehl-Neelsen stain ✔️
- PAS stain
- The spirochete which is associated with fusospirochetosis is______?
- Treponema pallidum
- Treponjema pertenue
- Borrelia burgdorferi
- Borrelia vincenti ✔️
- Bacterial species which is protective or beneficial to the host is_______?
- Streptococcus sanguis ✔️
- Porphyromonas gingivalis
- Treponema denticola
- Spirochetes
- An elderly male patient presented with fever, chest pain, and dry cough, sputum culture showed growth on charcoal yeast Extract Medium, the organism is_______?
- H. influenza
- Moraxella catarrhalis
- Legionella ✔️
- Burkholderia cepacia
- Which one of the following enteric organisms is anaerogenic and non motile ?
- Shigella sonnei ✔️
- Salmonella typhi
- Proteus mirabilis
- Klebsiella pneumonia
- The causative organism for cat-scratch disease is_______?
- Chlamydia trachomatis
- Donovania granulomatis
- Bartonella henselae ✔️
- Hemophilia ducreya
- Erysipelas is caused by________?
- Group B staphylococci ✔️
- Group A steptococci
- Gonococci
- Pneumococci
- Which of the following is obligate aerobe ?
- Pseudomonas aerogenosa ✔️
- coli
- Proteus
- diphtheria
- Staphylococcal toxic shock syndrome (SSS syndrome) is due to_______?
- Enterotoxin A
- Enterotoxin B
- Enterotoxin D
- Enterotoxin F ✔️
- A 6 year old boy comes with abdominal pain, vomiting after consuming mild products within 6 hours. The most likely organism responsible is______?
- Staph. aureus ✔️
- Salmonella
- B.Cereus
- Clostridium botulinum
- The most primitive mode of gene transfer occurs by______?
- Transduction
- Translation
- Cell fusion
- Conjugation ✔️
- Antigen used in Weil-Felix reaction______?
- E.coli
- Haemophilus
- Proteus ✔️
- Staphylococcus
- A diabetic patient developed cellulitis due to staphylococcus aureus, which was found to be Methicillin resistant on the antibiotic sensitivity testing. All of the following antibiotics will be appropriate EXCEPT_______?
- Vancomycin
- Imipenem
- Teichoplanin
- Linezolid ✔️
- Culture medium used for Bordatella pertussis is_______?
- Wilson Blair medium
- Bile broth
- Bordet Gengou medium ✔️
- Robertson cooked meat medium
- Pasteur developed the vaccine for______?
- Anthrax
- Rabies
- Cholera
- All of the above ✔️
- Teichoic acid is present in cell walls of________?
- Gram positive bacteria ✔️
- Gram negative bacteria
- Yeast
- Protozoa
- Pathogenic treponemas can be maintained in______?
- Tissue culture
- Chick embryos
- Artificial media
- Rabbit testis only ✔️
- Borelia vincenti is a_____?
- Mycoplasma
- Mycobacteria
- Spirochaete ✔️
- Chlamydia
- All of the following lab tests can be used to distinguish streptococcus mutans from other oral streptococci, except_____?
- Gram staining ✔️
- Fermentation of mannitol and sorbital
- Production of intracellular and extracellular adherent polysacharide
- Colony morphology on saliva agar
- A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ?
- Pasturella spp
- Francisella spp ✔️
- Bartonella spp
- Brucella spp
- Pneumococus can be differentiated from streptococcus by______?
- Type of hemolysis
- Gram staining
- Growth characteristics
- Bile solubility ✔️
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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