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.
3701 to 3750 MCQs for Lab Technician and Technologist Exam Preparation
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Questions 3701 to 3750
Microorganisms used for alcohol production
- a) Saccharomyces cerevisiae
- b) Bacillus subtilis
- c) Penicillium chrysogenum
- d) None of these
For streptomycin production the microorganisms required are
- a) Streptomyces griseus
- b) Streptomyces niger
- c) Saccharomyces cerevisiae
- d) All of these
The by-product during streptomycin production is
- a) Vitamin A
- b) Proline
- c) Vitamin B12
- d) None of these
For acetic acid production the methods followed are
- a) Orleans process
- b) Rapid process
- c) Submerged process
- d) All of these
For amylase production the microorganism required is
- a) B. subtilis
- b) S. cerevisiae
- c) A. niger
- d) None of these
Pectinase is industrially produced from
- a) S. cerevisiae
- b) Trichoderma Koningi
- c) A. niger
- d) None of these
Cellulose are produced from
- a) S. cerevisiae
- b) Trichoderma Koningi
- c) A. niger
- d) None of these
Industrial Production of Vitamin-B12 is from
- a) Propionibacterium sps.
- b) Pseudomonas sps.
- c) Both a and b
- d) None of these
Clostridium acetobutylicum is used for the production of
- a) Acetone – Butanol
- b) Ethanol
- c) Vitamin-B12
- d) None of these
In the production of ethanol industrially the yeast used is
- a) K. pneumoniae
- b) Kluyveromyces fragilis
- c) S. cerevisiae
- d) Both b and c
Citric acid is used as
- a) Flavouring agent in food
- b) As an antioxidant
- c) As preservative
- d) All of the above
Citric acid is produced in aerobic conditions by the fungi
- a) Aspergillus
- b) Penicillium
- c) Mucor
- d) All of these
The raw material for citric acid production is
- a) Corn
- b) Molasses
- c) Starch
- d) None of these
Aspergillus niger is used generally for the production of
- a) Ethanol
- b) Penicillin
- c) Citric acid
- d) Lactic acid
In the citric acid production, the pH to be maintained in the fermenter is
- a) 7.0
- b) 5.0 to 6.0
- c) 8.0 to 9.0
- d) 1.0 to 6.0
The required temperature for the production of citric acid is
- a) 10°C – 80°C
- b) 30°C – 50°C
- c) 20°C – 50°C
- d) 25°C – 30°C
The penicillin produced in large scale submerged fermentations are
- a) Penicillin-A
- b) Penicillin-D
- c) Penicillin-G
- d) None of these
The strain of fungi used for the large scale production of penicillin is
- a) Penicillium chrysogenum
- b) P. notatum
- c) Streptomyces Aurecus
- d) Saccharomyces sps
6-amino penicillic acid is prepared from penicillin sps by
- a) Acylase
- b) Penicillin acylase
- c) Penicillinone
- d) None of these
The pH to be maintained for the production of penicillin is
- a) 7.5
- b) 6.5
- c) 8.0
- d) 5.0
During the preparation of a routine H&E slide, what allows the tissue to be visualized?
- a) Fixation
- b) Embedding in paraffin
- c) Staining
- d) Slicing
Which type of cartilage forms the hammer, anvil and stirrup?
- a) Hyaline cartilage
- b) Elastic cartilage
- c) Fibrocartilage
- d) All of the above
- e) None of the above
Which of the following is an element of the central nervous system?
- a) Receptors
- b) Brachial plexus
- c) Sciatic nerve
- d) Ganglia
- e) Spinal cord
What is the limiting membrane of a cell?
- a) Plasmalemma
- b) Glycocalyx
- c) Protoplasm
- d) Cristae
What is the functional unit of the liver?
- a) Lobule
- b) Portal triad
- c) Central vein
- d) Hepatocyte
Which cell is the most abundant cell in the epidermis?
- a) Langerhans cell
- b) Keratinocyte
- c) Melanocyte
- d) Merkel cell
Which cells secrete pepsinogen?
- a) Parietal cells
- b) Oxyntic cells
- c) Chief cells
- d) Mucous neck cells
- e) Parietal cells and Oxyntic cells
What are the small tunnels seen in bone?
- a) Canaliculi
- b) Sharpey’s fibers
- c) Trabeculae
- d) Tome’s process
Which type of cartilage is the most abundant?
- a) Hyaline cartilage
- b) Elastic cartilage
- c) Fibrocartilage
- d) Hyaline cartilage and elastic cartilage equally
What is the connective tissue covering which surrounds cartilage?
- a) Perimysium
- b) Periosteum
- c) Perichondrium
- d) Perineurium
Which fiber type has a lot of mitochondria?
- a) Red fibers
- b) White fibers
- c) Intermediate fibers
- d) All of the above
Which fiber type is seen in smooth muscle?
- a) Red fibers
- b) White fibers
- c) Intermediate fibers
- d) None of the above
Which cell is a macrophage found in the skin?
- a) Kupffer cells
- b) Histiocyte
- c) Dust cell
- d) Langerhans cell
What type of tissue lines most of the gastrointestinal tract?
- a) Simple squamous epithelium
- b) Simple cuboidal epithelium
- c) Simple columnar epithelium
- d) Stratified squamous epithelium
Which of the following is NOT a function of the liver?
- a) Conversion of glucose into glycogen
- b) Storage of glycogen
- c) Storage of bile
- d) Storage of fat soluble vitamins
Which layer of the epidermis has cells which have keratohyaline granules?
- a) Stratum basale
- b) Stratum spinosum
- c) Stratum granulosum
- d) Stratum lucidum
What are the basophilic clusters of ribosomes and rough endoplasmic reticulum seen in neurons called?
- a) Ganglion
- b) Perikaryon
- c) Astrocyte
- d) Nissl
What is the cell body of a neuron called?
- a) Ganglion
- b) Soma
- c) Astrocyte
- d) Nissl
Which of the following is composed of smooth muscle?
- a) Upper esophagus
- b) Heart
- c) Tongue
- d) Biceps muscle
- e) Walls of the visceral organs
During the preparation of a routine H&E slide, what allows the tissue to hold its form?
- a) Fixation
- b) Embedding in paraffin
- c) Staining
- d) Slicing
What is a characteristic of the cells in the epidermis of the skin?
- a) Microvilli
- b) Stereocilia
- c) Cilia
- d) Keratinization
What is woven bone?
- a) Cancellous bone
- b) Compact bone
- c) Dense bone
- d) Immature bone
What do you call the space where a chondrocyte sits in?
- a) Space of Disse
- b) Space of Mall
- c) Vacuole
- d) Lacuna
What is the portion of the nail which is underneath skin?
- a) Lunula
- b) Eponychium
- c) Matrix
- d) Nail bed
- e) Root
Which cell is a macrophage found in the central nervous system?
- a) Kupffer cells
- b) Histiocyte
- c) Dust cell
- d) Langerhans cell
- e) Microglia
Which cell is the mature bone cell?
- a) Chondrocyte
- b) Chondroblast
- c) Osteocyte
- d) Osteoclast
What type of epithelium appears stratified, but is not?
- a) Epithelioid tissue
- b) Mesothelium
- c) Endothelium
- d) Transitional
- e) Pseudostratified
Which organelle contains digestive enzymes?
- a) Rough endoplasmic reticulum
- b) Smooth endoplasmic reticulum
- c) Lysosome
- d) Golgi apparatus
Which structures are part of the portal triad?
- a) Portal vein
- b) Hepatic artery
- c) Central vein
- d) Sinusoids
- e) Portal vein and Hepatic artery
During the preparation of a routine H&E slide, how is the tissue preserved?
- a) Fixation
- b) Embedding in paraffin
- c) Staining
- d) Slicing
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.
