Chapter 45 – MCQs for Lab Technician and Technologists

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.

2201 to 2250 MCQs for Lab Technician and Technologist Exam Preparation

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Questions 2201 to 2250

2201. According to Pasteur statements which one of the following is true
      1. Living organisms discriminate between stereoisomers ✔
      2. Fermentation is a aerobic process
      3. Living organisms doesn’t discriminate between stereoisomers
      4. Both a and b
2202. “I found floating therin earthly particles, some green streaks, spirally wound serpent-wise, and orderly arranged, the whole circumstance of each of these streaks was abut the thickness of a hair on one’s head”…. These words are of
      1. Leeuwenhoek ✔
      2. A. Jenner
      3. Pasteur
      4. Koch
2203. The principle light- trapping pigment molecule in plants, Algae, and cyanobacteria is
      1. Chlorophyll a ✔
      2. Chlorophyll b
      3. Porphyrin
      4. Rhodapsin
2204. During Bio Geo chemical cycle some amount of elemental carbon was utilized by the microorganisms. The phenomenon is called as
      1. Dissimilation
      2. Immobilization ✔
      3. Decomposition
      4. Neutralization
2205. Who demonstrated that open tubes of broth remained free of bacteria when air was free of dust.
      1. Abbc Spallanzani
      2. John Tyndall ✔
      3. Francisco Redi
      4. Pasteur
2206. Reverse isolation would be appropriate for
      1. a patient with tuberculosis ✔
      2. a patient who has had minor surgery
      3. a patient with glaucoma
      4. a patient with leukemia
2207. The symptome “ general feeling of illness and discomfort “ is called
      1. Cystitis
      2. Malaise ✔
      3. Anaphylactic shock
      4. Arthritis
2208. On soybean which of the following forms symbiotism
      1. Azatobactor paspali
      2. Rhizobium
      3. Nostoc
      4. Bradyrhizobium ✔
2209. Who provide the evidence that bacteriophage nucleic acid but not protein enters the host cell during infection
      1. Alfred D.Hershey & Leonard Tatum in 1951.
      2. Alfred D.Hershey & Zindar Lederberg in 1951.
      3. Alfred D.Hershey & Martha Chase in 1952. ✔
      4. Alfred D.Hershey & Macleod in 1952.
2210. Spirulina belongs to
      1. Xanthophyceae
      1. Cyanophyceae ✔
      2. Rhodophyceae
      3. Pheophyceae
2211. The first antibody to contact invading microorganisms was
      1. IgG
      2. IgM ✔
      3. IgA
      4. IgD
2212. The light emitted by luminescent bacteria is mediated by the enzyme
      1. Coenzyme Q
      2. Luciferase
      3. Lactose dehydrogenase ✔
      4. Carboxylase reductase
2213. Pick out the vector using in human Genome project
      1. Phagemid vector
      2. Yeast artificial chromosomes ✔
      3. Cosmid vectors
      4. Yeast episomal plasmids
2214. Salt and sugar preserve foods because they
      1. Make them acid
      2. Produce a hypotonic environment
      3. Deplete nutrients
      4. Produce a hypertonic environment ✔
2215. In a fluorescent microscope the objective lens is made of
      1. Glass
      2. Quartz
      3. Polythene ✔
      4. None of these
2216. Fixation of atmospheric nitrogen is by means of
      1. Biological process
      2. Lightining
      3. Ultraviolet light
      4. All of the above ✔
2217. Which one of the following fungi is the most serious threat in a bone marrow transplant unit?
      1. Candida albicans
      2. Aspergillus ✔
      3. Blastomyces
      4. Cryptococus
2218. Direct microscopic count can be done with the aid of
      1. Neuberg chamber ✔
      2. Anaerobic chamber
      3. Mineral oil
      4. Olive oil
2219. The image obtained in a compound microscope is
      1. Real
      2. Virtual ✔
      3. Real inverted
      4. Virtual inverted
2220. Enzymes respons ib le for a lcoho l ic fermentation
      1. Ketolase
      2. Zymase ✔
      3. Peroxidase
      4. Oxidase
2221. Which type of spores are produced sexually?
      1. Conidia
      2. Sporangiospores
      3. Ascospores ✔
      4. None of these
2222. Bacterial transformation was discovered by
      1. Ederberg and Tatum ✔
      2. Beadle and Tatum
      3. Griffith
      4. None of these
2223. Father of microbiology is
      1. Louis Pasteur
      2. Lister
      3. A.V. Leeuwenhock ✔
      4. Robert Koch
2224. The antiseptic method was first demonstrated by
      1. Lwanowski
      2. Lord Lister ✔
      3. Edward Jenner
      4. Beijerinck
2225. Small pox vaccine was first discovered by
      1. Robert Koch
      2. Louis Pasteur
      3. Lister
      4. Edward Jenner ✔

2226. The term mutation was coined by
      1. Pasteur
      2. Darwin
      3. Hugo devries ✔
      4. Lamark
2227. Compound microscope was discovered by
      1. Antony von
      2. Pasteur
      3. Johnsen & Hans ✔
      4. None of these
2228. Father of Medical Microbiology is
      1. Pasteur
      2. Jenner
      3. Koch ✔
      4. A.L.Hock
2229. Disease that affects many people at different countries is termed as
      1. Sporadic
      2. Pandemic ✔
      3. Epidemic
      4. Endemic
2230. Prophylaxis of cholera is
      1. Protected water supply
      2. Environmental sanitation ✔
      3. Immunization with killed vaccines
      4. All of these
2231. In electron microscope, what material is used as an objective lense?
      1. Magnetic coils ✔
      2. Superfine glass
      3. Aluminium foils
      4. Electrons
2232. The main feature of prokaryotic organism is
      1. Absence of locomotion
      2. Absence of nuclear envelope ✔
      3. Absence of nuclear material
      4. Absence of protein synthesis
2233. The stalked particles on the cristae of mitochondria are called
      1. Glyoxysomes
      2. Peroxisomes ✔
      3. Oxysomes
      4. Spherosomes
2234. Antiseptic methods were first introduced by
      1. Lord Lister ✔
      2. Iwanowski
      3. Beijernick
      4. Edward Jenner
2235. Kuru disease in Humans is caused by
      1. Bacteria
      2. Viroides
      3. Prions ✔
      4. Mycoplasma
2236. A mutation that produces termination codon is
      1. Mis-sense mutation
      2. Neutral mutation
      3. Non-sense mutation ✔
      4. Reverse mutation
2237. During conjunction the genetic material will be transferred through
      1. Cell wall
      2. Medium
      3. Pili ✔
      4. Capsule
2238. Antiseptic surgery was discovered by
      1. Joseph Lister ✔
      2. Ernest Abbe
      3. Pasteur
      4. Beijerink
2239. Tuberculosis is a
      1. Water borne disease
      2. Air borne disease ✔
      3. Food borne disease
      4. Atthropod borne disease
2240. Phagocytic phenomenon was discovered by
      1. Louis Pasteur
      2. Alexander Fleming
      3. Metchnikof ✔
      4. Robert Koch
2241. Meosomes are also known as
      1. Mitochondria
      2. Endoplasmic reticulum
      3. Plasmids
      4. Chondroids ✔
2242. Hybridoma technique was first discovered by.
      1. Kohler and Milstein ✔
      2. Robert Koch
      3. ‘D’ Herelle
      4. Land Steiner
2243. The minimum number of bacter is required to produce clinical evidence of death in a susceptible animal under standard condition is called
      1. LD50
      2. ID
      3. MLD ✔
      4. All of these
2244. In Electron Microscope source of electrons is from
      1. Mercury lamp
      2. Tungsten metal ✔
      3. both a and b
      4. None of these
2245. Griffith (1928) reported the phenomenon of transformation first in
      1. H. influenzae
      2. Bacillus species
      3. Pneumococci ✔
      4. E.coli
2246. The resolution power of the compound microscope is
      1. 0.2 micron ✔
      2. 0.2 millimeter
      3. 0.2 Angstrom units
      4. 0.2 centimeter
2247. The capacity of a given strain of microbial species to produce disease is known as
      1. Pathogen
      2. Virulence ✔
      3. Infection
      4. None of these
2248. Monoclonal antibodies are associated with the name of
      1. Burnet ✔
      2. Medwar
      3. Milstein kohler
      4. Owen
2249. Lederberg and Tatum (1946) described the phenomena of
      1. Conjunction ✔
      2. Transformation
      3. Mutation
      4. Plasmids
2250. Hanging drop method for motility study was first introduced by
      1. Robert Koch
      2. Louis Pasteur
      3. Jenner
      4. Leeuwenhock ✔

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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Possible References Used

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