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.
2851 to 2900 MCQs for Lab Technician and Technologist Exam Preparation
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Questions 2851 to 2900
One of the following statements about sterilization is NOT true_____?
- a) Liquid paraffin ? Dry heat
- b) Glass syringes ? Boiling at 169°C for 60 min
- c) Flash pasteurization of milk ? 72°C for 15 seconds followed by rapid cooling
- d) Vaccines ? Ethylene oxide
Moist heat kills all of the following EXCEPT______?
- a) Brucella
- b) Mycobacterium
- c) Salmonella
- d) Coxiella burnetti
Which component of the cell wall is responsible_______?
- a) Region I
- b) Region II
- c) Region III
- d) Boivin antigen
T cell matures in____?
- a) Payers patch
- b) Lymph node
- c) Thymus
- d) Busra of Fabricius
CD4 cells recognize the antigens in association with______?
- a) MHC I
- b) MHC II
- c) MHC III
- d) B-cell receptor
IL-1 is produced by______?
- a) Helper T cells
- b) Helper B cells
- c) Monocytes
- d) Macrophages
Grave’s disease is an example of type immunologic response______?
- a) Type I
- b) Type II
- c) Type III
- d) Type IV
Type IV hypersensitivity reaction is mediated by which of the following_______?
- a) B-cells
- b) Active T cells
- c) NK cells
- d) Plasma cells
Which of the following is a live vaccine______?
- a) 17 D
- b) Salk
- c) Hepatitis
- d) HDCV
Techoic acid is present in_____?
- a) Cell wall of Gram positive organisms
- b) Cell wall of Gram negative organisms
- c) Cytoplasm of Gram positive organisms
- d) Cytoplasm of Gram negative organisms
Which of the following are correctly matched?
- a) Transfer of antibody from mother to child is through colostrum and acquired passive immunity naturally
- b) Injection of antibodies (Hepatitis) is artificially acquired passive immunity
- c) Antigenic stimulus given by vaccine (polio) is artificial active immunity
- d) All of the above
Selective media for MYCOBACTERIUM _?
- a) Sabourauds medium
- b) Agar – agar
- c) Lowenstein Jensen medium
- d) Loefflers serum slope
Which of the following provides the best guarantee for sterilization in the heat sterilizer?
- a) Using chemical indicator strip or pouch
- b) Recording temperature/pressure readings from sterilizer gauge
- c) Using a bacterial spore test
- d) Determining the ability of a sterilizer to kill the hepatitis B virus
The serum concentration of which of the following human IgG subclass is maximum?
- a) IgG1
- b) IgG2
- c) IgG3
- d) IgG4
Glassware are sterilized by_____?
- a) Autoclaving
- b) Hot air oven
- c) Incineration
- d) Formaldehyde
Function of T-lymphocyte is/are_____?
- a) Production of interferon
- b) Lymphokine production
- c) Rosette formation
- d) All of the above
Heptane is______?
- a) Same as epitopes
- b) Carrier required for specific antibody production
- c) High molecular protein
- d) None of the above
Delayed tuberculin test response is due to______?
- a) B lymphocytes
- b) T lymphocytes
- c) Monocytes
- d) Histiocytes
VDRL is a______?
- a) Slide flocculation test
- b) Tube flocculation test
- c) Tube agglutination test
- d) Latex agglutination test
Secretory piece of IgA is synthesized in____?
- a) T-cells
- b) B-cells
- c) Lymph nodes
- d) Mucosal epithelium
Immunoglobulin consists of______?
- a) 2 light, 2 heavy chains
- b) 1 heavy, 2 light chains
- c) 1 light, 1 heavy chain
- d) 3 light, 1 heavy chain
The exact part of the antigen that reacts with the immune system is called as_____?
- a) Clone
- b) Epitope
- c) Idiotope
- d) Paratope
Phagocytosis enhanced by coating the surface of antigen is called______?
- a) Opsonization
- b) Chemotaxis
- c) De coding
- d) CFT
Immunoglobulin, Which is produced first by the fetus in response to infection______?
- a) IgG
- b) IgA
- c) IgM
- d) IgD
Plasmid______?
- a) Involved in multidrug resistance transfer
- b) Involved in conjugation
- c) Imparts capsule formation
- d) Imparts pili formation
- e) Both First and Second
Operation theatres are sterilized by____?
- a) Carbolic acid spraying
- b) Washing with soap and water
- c) Formaldehyde fumigation
- d) ETO gas
Hospital dressing is best disposed by______?
- a) Incineration
- b) Dumping
- c) Autoclaving
- d) Burying
Which of the following organisms are arranged in cubical packets of eight cocci_______?
- a) Staphylococcus
- b) Micrococcus
- c) Sarcina
- d) Aerococcus
Sporulation occurs in_______?
- a) Lag phase
- b) Log phase
- c) Stationary phase
- d) Decline phase
Graft versus host reaction is caused by______?
- a) B-Lymphocytes
- b) T-lymphocytes
- c) Monocytes
- d) Leukocytes
Smith Noguchi’s media is used for______?
- a) Salmonella
- b) Klebsiella
- c) Spirochetes
- d) Bacillus
Noguchi’s medium is used for______?
- a) Bordetella
- b) Brucella
- c) Borrelia
- d) None of the above
One of the following staining methods is an example of negative staining_______?
- a) Gram’s staining
- b) Fontana’s staining
- c) India ink preparation
- d) Zheil-Neilson’s staining
Bacteria with tuft of flagella at one end are called_______?
- a) Monotrichate
- b) Peritrichate
- c) Bipolar
- d) Lophotrichate
Exaltation is______?
- a) Decreased virulence
- b) Increased Virulence
- c) No change
- d) None
First released immunoglobulin after primary immunization_____?
- a) IgD
- b) IgE
- c) IgG
- d) IgM
B.C.G untrue is____?
- a) live vaccine
- b) T.B vaccine
- c) Orally administered
- d) All of the above
Sterilisation control for moist heat is “or” The efficacy of the moist heat sterilization technique commonly used to sterilize laboratory ware and culture media is tested by using______?
- a) Using Bacillus stearothermophilus
- b) Using non-pathogenic strain of Clostridium tetani
- c) Using chemical indicator
- d) Using methylene blue
Endotoxins differ from exotoxins in that endotoxins_____?
- a) are proteins
- b) are heat labile
- c) are highly antigenic
- d) activate complement by the alternate pathway
Detergents used to disinfect dental instruments in the office kill bacteria by interfering with functional of the cell______?
- a) wall
- b) nucleus
- c) membrane
- d) Capsule
The immediate type of hypersensitivity in which histamine does not play a major role is________?
- a) Urticaria
- b) Asthma
- c) Anaphylaxis
- d) Arthus reaction
The binding site for complement on the IgG molecule is in the_______?
- a) VL domain
- b) CL domain
- c) CH1 domain
- d) CH2 domain
Serum sickness syndrome is an example of_______?
- a) Anaphylactic
- b) Angioneurotic edema
- c) Cell-mediated immunity
- d) Systemic Arthus reaction
Immunoglobulins are secreted by_______?
- a) Macrophages
- b) Plasma cells
- c) T-cells
- d) Neutrophils
A darkfield microscope would be useful in examining blood for_______?
- a) Treponema
- b) Actinomyces
- c) Streptococcus
- d) Mycobacterium
Disinfection frees the surface from_______?
- a) Vegetative forms
- b) Spore forms
- c) Both of the above
- d) None of the above
An example of naturally acquired passive immunity is________?
- a) Hepatitis vaccination
- b) Gamma globulin injection
- c) Immune blood transfusion
- d) Placental transfer of antibodies
Which of the following is an enrichment medium________?
- a) Blood agar
- b) Selenite F Broth
- c) Mac Conkey agar
- d) Nutrient Broth
Synthesis of antibodies in plasma cells occurs in_________?
- a) Golgi body
- b) Endoplasmic reticulum
- c) Nucleus
- d) Mitochondria
Immunoglobulin implicated in atopy and anaphylaxis is________?
- a) IgE
- b) IgM
- c) IgG
- d) IgA
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.
