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.
3051 to 3100 MCQs for Lab Technician and Technologist Exam Preparation
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Questions 3051 to 3100
The most common site where organisms are present in a typhoid carrier is______?
- a) Spleen
- b) Gall Bladder
- c) Liver
- d) Salivary gland
Diphtheria is pathogenic only when infected with_______?
- a) Beta phage
- b) Alfa phage
- c) Lambda K12
- d) Delta Phage
Which of the following is an acid-fast bacillus_______?
- a) Mycobacterium bacilli
- b) Treponema pallidum
- c) Neisseria gonorrhea
- d) All of the above
Group A B-hemolytic streptococcal infection of the pharynx may be followed in some by______?
- a) Diphtheria
- b) Typhoid fever
- c) Rheumatic fever
- d) Syphilis
Causative agents of Vincent’s angina_____?
- a) Borrelia vincenti and fusobacterium fusiformis
- b) Borrelia recurrents and bateroides
- c) Borrelia burgoloferi and lactobacillus
- d) Leptospira and Treponema pallidum
A protoplast is best characterized as a bacterial cell_______?
- a) with a cell wall but free of a capsule
- b) containing a cell wall and a capsule
- c) Free of a cell wall and a capsule
- d) Uniquely sensitive to penicillin
Which regards to temperature requirement, most pathogenic bacteria are_____?
- a) Psychrophiles
- b) Mesophiles
- c) Cryophiles
- d) Thermophiles
One of the following is an agglutination test in the diagnosis of typhoid____?
- a) Widal test
- b) Eleks test
- c) Mantoux test
- d) Wasserman test
Staphylococci typically occur in_______?
- a) Pairs
- b) Chains
- c) Tetrads
- d) Irregular clusters
In a patient with typhoid, diagnosis after 15 days of onset of fever is best done by_____?
- a) Blood culture
- b) Widal test
- c) Stool culture
- d) Urine culture
The virulence factors of Neisseria gonorrhea include all of the following except______?
- a) Outer membrane proteins
- b) IgA Protease
- c) M-Proteins
- d) Pili
The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____?
- a) Conjugation
- b) Rarefaction
- c) Transduction
- d) Transformation
One of the following is a treponemal test for diagnosis of syphilis______?
- a) FTAB
- b) Widal test
- c) Wasserman test
- d) Kahn test
For uniform staining reaction, morphology and biochemical activity it is advisable to study bacterial cultures during the_____?
- a) Lag phase
- b) Death phase
- c) Stationary phase
- d) Logarithmic phase
Organ of locomotion in bacteria is______?
- a) Fimbria
- b) Flagella
- c) Capsule
- d) Cell wall
Endotoxin have all but one of the properties given below____?
- a) Produced by gram negative bacteria
- b) Produced by gram positive bacteria
- c) Not secreted outside the cell
- d) Cannot be toxoided
Toxic shock syndrome is due to the following virulence factor_____?
- a) M protein
- b) Pyrogenic exotoxin
- c) Streptolysin O
- d) Carbohydrate cell wall
The commonest method of detection of diphtheria carriers is___?
- a) Schick test
- b) Dick test
- c) Casoni’s test
- d) Charles’ test
The difference between gram positive and negative bacteria lies in their_____?
- a) cell wall
- b) cell membrane
- c) Nuclear material
- d) Mesosomes
The specific test for Treponema pallidum is_____?
- a) VDRL
- b) Kahn’s test
- c) TPHA
- d) Widal test
All of the following are true of streptococcus except____?
- a) It’s group of lactic acid production bacteria
- b) Shows adherence to dental enamel
- c) Most common in humans
- d) Most common is animals
Bacteria reproduce mainly by_____?
- a) Budding
- b) Binary fission
- c) Sporing
- d) Bacterial components produced by host cells
An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other antibiotics. Which of the following organisms is it likely to be?
- a) Escherichia coli
- b) Klebsiella pnemoniae
- c) Proteus miribilis
- d) Pseudomonas aeruginosa
The causative organism of syphilis is_____?
- a) Borrelia burgolorferi
- b) Chalamydia trachomatis
- c) Leptospira interrogans
- d) Treponema pallidum
The medium used in membrane filter technique was
- a) EMB agar
- b) EMR-Vp medium
- c) Lactose broth
- d) Endo agar
Lysol is a
- a) Sterilent
- b) Disinfectant
- c) Antiseptic
- d) Antifungal agent
Which of the following is a neutral stain?
- a) Picric acid
- b) Gmiemsa
- c) Neutral red
- d) Malachite green
Peptone water medium is an example for
- a) Synthetic medium
- b) Semisynthetic medium
- c) Differential medium
- d) None of these
The method in which the cells are frozen dehydrated is called
- a) Pasteurization
- b) Dessication
- c) Disinfection
- d) Lyophilization
The technique used to avoid all microorganisms is accomplished by
- a) Sterilization
- b) Disinfection
- c) Surgical sterilization
- d) Disinfection Sterilization
Thermal death time is
- a) Time required to kill all cells at a given temperature
- b) Temperature that kills all cells in a given time
- c) Time and temperature needed to kill all cells
- d) All of the above
A culture medium the exact composition of which is not known was called as
- a) Simple
- b) Complex
- c) Defined
- d) Natural
Elek’s gel diffusion test is used for the detection of
- a) Tetani toxin
- b) Cholera toxin
- c) Diphtheria toxin
- d) Toxoid
Temperature required for pasteurization is
- a) Above 150°C
- b) Below 100°C
- c) 110°C
- d) None of these
Separation of a single bacterial colony is called
- a) Isolation
- b) Separation
- c) Pure culturing
- d) All of these
Which of the following is ionizing radiation?
- a) U.V. rays
- b) IR
- c) X-rays
- d) None of these
Which of the following induces dimerisation of thymine?
- a) X-rays
- b) U.V. rays
- c) γ-rays
- d) None of these
When food material are preserved at a temperature just above freezing temperature, the process is called.
- a) Freezing
- b) Pasteurisation
- c) Chilling
- d) Frosting
Which of the following method of sterilization has no effect on spores?
- a) Drying
- b) Hot air oven
- c) Autoclave
- d) None of these
Treponema pallidum can be best identified using
- a) Fluorescence microscope
- b) Bright field microscope
- c) Dark field microscope
- d) Fluorescence microscope
Autoclaving is carried at
- a) Dry heat
- b) Atmospheric pressure
- c) 120°C
- d) All of these
Temperature in pasteurization is
- a) 62.8°C
- b) 35.7°C
- c) 68.2°C
- d) 60.8°C
The bacterial culture prepared by pure culture method is
- a) Inoculum
- b) Suspension
- c) Dilution
- d) None of these
Algae are rich in
- a) Carbohydrates
- b) Proteins
- c) Vitamins
- d) All of these
L-Lysine is produced from
- a) Corynebacterium glutamicum
- b) Clostridium botulinum
- c) Mycobacterium sps
- d) Pseudomonas
The orderly increase in the quantity of all of the cellular components is known as
- a) Reproduction
- b) Growth
- c) Binary fission
- d) None of these
Thiobacillus thiooxidans grow at pH
- a) 7.0
- b) 1.0
- c) 6.0
- d) 9.5
Slow freezing requires the conditions
- a) 0°C to 15°C for 15 min.
- b) –6°C to –10°C for 10 min.
- c) –15°C to 3 to 72 hrs.
- d) None of these
Discontinuous heating is called
- a) Pasteurization
- b) Sterilization
- c) Fermentation
- d) Tyndallization
Isolation is
- a) Purification of culture
- b) Introduction of inoculum
- c) Separation of a single colony
- d) To grow microorganisms on surfaces
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.
