Chapter 46 – 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.

2251 to 2300 MCQs for Lab Technician and Technologist Exam Preparation

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Questions 2251 to 2300

2251. Electron microscope gives magnification upto
      1. 100 X
      2. 2000 X
      3. 50,000 X
      4. 2,00,000 X ✔
2252. Term vaccine was coined by
      1. Robert Koch
      2. Pasteur ✔
      3. Needham
      4. None of these
2253. The inventor of Microscope is
      1. Galileo
      2. Antony von ✔
      3. Pasteur
      4. Koch
2254. First Pasteur conducted fermentation experiments in
      1. Milk
      2. Food material
      3. Fruit juices ✔
      4. Both a and c
2255. Modern concepts of chemotherapy was proposed by
      1. Paul Ehrlich ✔
      2. Joseph Lister
      3. Elie Metchnikoff
      4. None of these
2256. The role of phagocytosis was discovered by
      1. Paul Ehrlich
      2. Joseph lister
      3. Elie Metchikoff ✔
      4. Pasteur
2257. L – forms are discovered by
      1. Klein Berger ✔
      2. Louis Pasteur
      3. Robert Koch
      4. Antony von Leeuwenhock
2258. The causative organism of rocky mountain spotted fever was first described by
      1. Howard Ricketts
      2. da Rocha-lima
      3. Both a and b ✔
      4. Robert Koch
2259. The term bacteriophage was coined by
      1. De’Herelle ✔
      2. F.W. Twort
      3. Beijernick
      4. Jwanosky
2260. Viral infection of bacteria was discovered by
      1. De’Herelle
      2. F.W. Twort ✔
      3. Beijernick
      4. Jwanoksy
2261. Eye cannot resolve any image less than
      1. 1ìm
      2. 2ìm
      3. 7ìm
      4. 5ìm ✔
2262. Compound Microscope was discovered by
      1. A.V. Lewenhoek
      2. Pasteur
      3. Janssen and Hans ✔
      4. None of these
2263. Electron Microscope was discovered by
      1. Prof. Fritz
      2. Janssen and Hans
      3. Knoll and Ruska ✔
      4. None of these
2264. Magnification range of light microscope is
      1. 1000x – 5000x
      2. 1000x – 2000x ✔
      3. 500x – 1000x
      4. None of these
2265. Condensation of light in light Microscope is by
      1. Objective
      2. Condensor ✔
      3. Ocular
      4. All of these
2266. Light gathering capacity of Microscope is called
      1. Numerical aperture ✔
      2. Angular aperture
      3. Both a and b
      4. None of these
2267. If 10x and 40x objectives are used (air is the medium), the numerical aperture is
      1. 1.5
      2. 2.0
      3. 1.0 ✔
      4. 1.8
2268. The ability of Microscope to distinguish two objects into two separate objects, is called.
      1. Resolving power ✔
      2. Wave length
      3. N.A.
      4. None of these
2269. Limit of resolution of compound microscope is
      1. 0.018 Ao
      2. 0.1 mm ✔
      3. 5 ìm
      4. 1 mm
2270. Source of light in fluorescence microscopy is from
      1. Mercury lamp ✔
      2. Sunlight
      3. Both a and b
      4. None of these
2271. Who perfected a magnetic lens in 1927
      1. Gabor ✔
      2. Broglie
      3. Busch
      4. None of these
2272. The magnefication power of electron microscope developed by Knell and Ruska is
      1. 10,000x
      2. 12,000x ✔
      3. 15,000x
      4. 20,000x
2273. In electron microscope source of electrons is from
      1. Mercury lamp
      2. Tungsten metal ✔
      3. Both a and b
      4. None of these
2274. The e lectron passed out from the specimen are called
      1. Primary electrons
      2. Secondary electrons ✔
      3. Tertiary electrons
      4. None of these
2275. Mycorrhiza was first observed by
      1. Funk
      2. Frank ✔
      3. Fisher
      4. Crick

2276. The transfer of genetic material during transformation is proved basing on Griffith’s experiment by
      1. Avery Macleod & Mc.Carthy ✔
      2. Lederberg & Taulum
      3. Zinder & Lederberg
      4. Watson & Crick
2277. Phagocytic theory was proposed by
      1. Louis Pasteur
      2. Elie Metchnikoff ✔
      3. Behring
      4. Widal
2278. Anaphylaxia was first observed by
      1. Parter & Richet ✔
      2. Coombs
      3. Gell
      4. None of these
2279. Primary mediators in anaphylaxis
      1. Histamine
      2. Seratonin
      3. Heparin
      4. All of these ✔
2280. Arthus reaction was discovered by
      1. Marrice Arthus ✔
      2. Von Perquit
      3. Richet
      4. Porter
2281. Serum sickness reaction was discovered by
      1. Marrice Arthus
      2. Von perquit ✔
      3. Richet
      4. Porter
2282. Hybridoma technique was developed by
      1. Kochler & Milston
      2. Niel’s Jerne
      3. Both a and b ✔
      4. None of these
2283. Disease that effects many people at different countries is termed as
      1. Sporadic ✔
      2. Pandemic
      3. Epidemic
      4. Endemic
2284. If the vectors transmit the infection mechanically they are called
      1. Biological vectors
      2. Mechanical vectors ✔
      3. Biological reservoir
      4. Both a and c
2285. If a person can be infected by direct contact with infected tissue of another person, it is termed as
      1. Indirect contact transmission
      2. Attachment
      3. Direct contact transmission ✔
      4. None of these
2286. Reduction of virulence is known as
      1. Exaltation
      2. Attenuation ✔
      3. Both a and b
      4. None of these
2287. Enhancement of virulence is known as
      1. Exaltation ✔
      2. Attenuation
      3. Both a and b
      4. None of these
2288. The virulence of a pathogen is usually measured by
      1. LD
      2. MLD
      3. ID
      4. All of the above ✔
2289. The lethal dose required to kill 50% of the lab animals tested under standard called
      1. ID
      2. LD50 ✔
      3. ID50
      4. MLD
2290. The most important virulence factors are
      1. Adhesions
      2. Invasiveness
      3. Toxigenicity
      4. Enzymes
      5. All of the above ✔
2291. The ability of a pathogen to spread in ths host tissues after establishing the infection is known as
      1. Adhesion
      2. Invasiveness ✔
      3. Toxigenicity
      4. None of these
2292. Which is the following enzyme acts as a spreading factor?
      1. Hyaluronidase ✔
      2. Coagulase
      3. Catalase
      4. DNase
2293. Vibrio Cholerae was discovered by
      1. Koch
      2. Metchnikoff ✔
      3. John Snow
      4. Virchow
2294. E.coli was first isolated by
      1. Louis Pasteur
      2. Escherich ✔
      3. Shiga
      4. Robert Koch
2295. Mycobacterium tuberculosis was first discovered by
      1. Robert Koch ✔
      2. Edward Jenner
      3. Louis Pasteur
      4. None of these
2296. Mycobacterium lepree was discovered by
      1. Robert Koch
      2. Hansen ✔
      3. Edward Jenner
      4. Louis Pasteur
2297. Streptococcus pneumoniae was isolated by
      1. Robert Koch
      2. Edward Jenner
      3. Antony von Leewenhock
      4. Louis Pasteur ✔
2298. B.anthracis was isolated by
      1. Louis Pasteur
      2. Robert Koch ✔
      3. Antonyvon Leewenhok
      4. None of these
2299. Staphylococcus aureus was isolated by
      1. Rosenbach
      2. Louis Pasteur ✔
      3. Passet
      4. Sir Alexander Ogston
2300. Pseudomonas aeruginosa was first named
      1. Schroeter and Gessard ✔
      2. Robert Koch
      3. Louis Pasteur
      4. Edward Jenner

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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