Chapter 49 – 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.

2401 to 2450 MCQs for Lab Technician and Technologist Exam Preparation

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Questions 2401 to 2450

2401. Interferon is formed by
      1. Lymphocytes
      2. Lymphoblasts
      3. Fibroblasts
      4. All of these ✔
2402. Pigment bearing structure of bacteria are
      1. Mesosomes
      2. Plasmids
      3. Mitochondria
      4. Chromophores ✔
2403. Spirochete is
      1. Gonococci
      2. Strphylococci
      3. Treponema pallidum ✔
      4. Streptococci
2404. Histones are found in
      1. Prokaryotes
      2. Eukaryotes ✔
      3. Viruses
      4. None of these
2405. Cell wall of gram negative bacteria is
      1. Thick
      2. Lipids are present
      3. Teichoic acids are absent ✔
      4. None of these
2406. Cytoplasmic streaming is present in
      1. Prokaryotes
      2. Animals
      3. Eukaryotes ✔
      4. Both a and b
2407. The motile bacteria is
      1. S. typhi ✔
      2. K. pneumoniae
      3. B. anthracis
      4. Shigella
2408. The stain used to demonstrate fungus
      1. Albert
      2. Nigerosin
      3. Lactophenol cotton blue ✔
      4. None of these
2409. Exotoxina are
      1. Heat labile ✔
      2. Heat stable
      3. Part of cell wall
      4. Polymerized complexes
2410. The viruses that attack bacteria are
      1. Bacterial viruses
      2. Bacterial pathogens
      3. Bacteriophages ✔
      4. Various
2411. The size of virus particle may range
      1. 0.02–0.2 ìm
      2. 0.5–10 ìm
      3. 0.015–0.2 ìm ✔
      4. 0.1–100 ìm
2412. The bacterial cell multiplication is usually by
      1. Mitosis
      2. Meiosis
      3. Conjugation
      4. ]Binary-fission ✔
2413. Rod shaped bacteria are known as
      1. Cocci
      2. Comma forms
      3. Bacilli ✔
      4. Plemorphic froms
2414. ll the groups of bacteria have cell wall
      1. Mycobacteria
      2. Mycoplasmas ✔
      3. Clostridia
      4. Rickettsia
2415. Thickness of cell wall ranges from
      1. 9-10 nm
      2. 12-13 nm
      3. 10-25 nm ✔
      4. 30-40 nm
2416. Teichoic acids and Teichuronic acids are found in
      1. Gram positive bacteria ✔
      2. Gram negative bacteria
      3. Fungi
      4. None of these
2417. Meosomes are
      1. Kind of ribosomes
      2. Formed during cell lysis
      3. A part of cell wall
      4. Principal sites of respiratory enzymes ✔
2418. The characteristic shape of the bacteria is maintained because of
      1. Capsule
      2. Cell wall ✔
      3. Cell membrane
      4. Slime layer
2419. Bacterial capsule is chemically composed of
      1. Polypeptide
      2. Polynucleotides
      3. Polysaccharides
      4. Polypeptides or polysaccharides ✔
2420. The cell wall deficient form of bacteria is
      1. Mycoplasma
      2. ‘L’ form ✔
      3. Protoplast
      4. Spheroplast
2421. Mesosomes are also known as
      1. Mitochondria
      2. Chloroplasts
      3. Golgi complex
      4. Chondroids ✔
2422. The differences between Gram positive and Gram negative bacteria is shown to reside in the
      1. Cell wall ✔
      2. Nucleus
      3. Cell membrane
      4. Mesosomes
2423. Capsule formation occurs in the presence of
      1. Albumin
      2. Charcoal
      3. Serum ✔
      4. Starch
2424. The virulence determining antigens of microorganisms may be
      1. Proteins and polysaccharides
      2. Carbohydrate – protein complexes
      3. Polysaccharide – Phospholipid – Protein complexes
      4. All of these ✔
2425. Organelles with hydrolytic enzymes are
      1. Mitochondria
      2. Golgi complex
      3. Lysosomes ✔
      4. Ribosomes

2426. Bacterial locomotion is accomplished by
      1. Fimbria
      2. Flagella
      3. Cytoskeleton
      4. Both a and b ✔
2427. Fimbriae are demonstrated by
      1. Culture
      2. Gram stain
      3. Biochemical reactions
      4. Haemaggulation test ✔
2428. The motile bacteria is
      1. Salmonella typhi ✔
      2. Klebsiella pneumoniae
      3. Bacillus anthracis
      4. Shigella flexneri
2429. Following cocci are non-motile except
      1. Staphylococcus
      2. Meningococcus
      3. Gonococcus
      4. Rhodococcus agilis ✔
2430. Metachromatic granules are chemically composed of
      1. Lipids
      2. Proteins
      3. Polymetaphosphates ✔
      4. Polysaccharide
2431. Metachromatic granules can be stained with
      1. Saffranine
      2. Methylene blue ✔
      3. Crystal violet
      4. Pienic acie
2432. Bacteria multiply by
      1. Spore formation
      2. Simple binary fission
      3. Conjugation
      4. Gametes ✔
2433. Bacterial spores are
      1. Weakly acid fast ✔
      2. Strongly acid fast
      3. Alcohol fast
      4. Non acid fast
2434. Endospores can be stained with
      1. Safranine
      2. Crystal violet
      3. Methylene blue
      4. Malachite green ✔
2435. The following bacteria produce pigment, except
      1. Pseudomonas pyocyaneus
      2. Serratia marcescens
      3. D. pneumoniae ✔
      4. Staphylococcus aureus
2436. The order of stains in Gram-staining procedure is
      1. Crystal violet, Iodine solution, Alcohol, Saffranine ✔
      2. Iodine solution, Crystal Violet, Saffranine, Alcohol
      3. Alcohol, Crystal Violet, Iodine solution, Saffranine
      4. All of these
2437. The percentage of alcohol used in Gramstaining is
      1. 75%
      2. 90% ✔
      3. 60%
      4. 25%
2438. Gram positive bacteria appear as
      1. Pink
      2. Violet ✔
      3. both a & b
      4. None of these
2439. Gram negative bacteria appear as
      1. Pink ✔
      2. Violet
      3. both a & b
      4. None of these
2440. The action of alcohol during Gramstaining is
      1. Allows the color
      2. It adds color
      3. Decolorises the cells ✔
      4. None of these
2441. Lipid contents is more in
      1. Gram negative bacteria ✔
      2. Gram positive bacteria
      3. Same in both
      4. None of these
2442. Cell-wall is
      1. Thick in Gram positive than Gram negative ✔
      2. Thick in Gram negative than Gram positive
      3. Equal in both
      4. In Gram negative cell-wall is absent
2443. The Lipid content present in Gram positive bacterial cell-wall is
      1. 1-10 %
      2. 1-5 % ✔
      3. 2-8 %
      4. None of these
2444. Rickettsiae stained by this technique responds as
      1. Gram positive
      2. Gram negative ✔
      3. Between positive and negative
      4. None of these
2445. Chlamydiae occur in
      1. Elementary bodies
      2. Reticulate bodies
      3. Complex structures
      4. a and b ✔
2446. Chlamydiae can be stained better with
      1. Ziehl neelsen staining
      2. Castaneda & Machiavello stains
      3. Giminez stains
      4. Both b and c ✔
2447. Algae means
      1. Fresh water organisms
      2. Sea weeds ✔
      3. Fresh water weeds
      4. None of these
2448. The study of algae is known as
      1. Algalogy
      2. Phycology ✔
      3. Mycology
      4. Bacteriology
2449. The free floating algae are known as
      1. Phytoplankins ✔
      2. Benthons
      3. Sea weeds
      4. None of these
2450. Sexual reproduction of algae is carried by
      1. Isogamy
      2. Anisogamy
      3. Oogamy
      4. All the above ✔

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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