5101 to 5150 MCQs for Lab Technician and Technologist Exam Preparation
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.
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Questions 5101 to 5150
- All the following statements about albinism are correct except
- Tyrosine hydroxylase (tyrosinase) is absent or deficient in melanocytes
- Skin is hypopigmented
- It results in mental retardation✔
- Eyes are hypopigmented
- Glycine is not required for the formation of
- Taurocholic acid✔
- Creatine
- Purines
- Pyrimidines
- Histamine is formed from histidine by
- Deamination
- Dehydrogenation
- Decarboxylation✔
- Carboxylation
- DOPA is an intermediate in the synthesis of
- Thyroid hormones
- Catecholamines
- Melanin
- Catecholamines and melanin✔
- All the following statements about pepsin are correct except
- It is smaller than pepsinogen
- It is formed by the action of HCl on its precursor
- Its optimum pH is 1.0–2.0
- It hydrolyses the C-terminal and N-terminal peptide bonds of proteins✔
- Pancreatic juice contains the precursors of all of the following except
- Trypsin
- Chymotrypsin
- Carboxypeptidase
- Aminopeptidase✔
- The only correct statement about chymotrypsin is
- It is formed from trypsin
- Carboxypeptidase converts trypsin into chymotrypsin
- Its optimum pH is around 7✔
- It hydrolyses peptide bonds involving basic amino acids
- The portion of the antigen molecule which is recognized by antibody is known as
- Hapten
- Epitope✔
- Complement
- Variable region
- All the following statements about haptens are true except
- They have high molecular weights✔
- They cannot elicit an immune response by themselves
- When combined with some other large molecule, they can elicit an immune response
- Once an immune response develops, the free hapten can be recognized by the antibody
- Antigens and haptens have the following similarity:
- They have high molecular weights
- They can elicit immune response by themselves
- They can elicit an immune response only in association with some other large molecule
- Once an immune response develops, free antigen and free hapten can be recognized by the antibody✔
- The minimum number of polypeptide chains in an immunoglobulin is
- Two
- Four✔
- Five
- Six
- Light chains of immunoglobulins are of following types:
- Alpha and kappa✔
- Alpha and gamma
- Lambda and delta
- Kappa and lambda
- Immunoglobulins are classified on the basis of
- Type of light chains
- Type of heavy chains✔
- Types of light and heavy chains
- Molecular weight
- The molecular weight of light chains is
- 10,000–15,000
- 20,000–25,000✔
- 25,000–50,000
- 50,000–75,000
- The molecular weight of heavy chains is
- 20,000–25,000
- 25,000–50,000
- 50,000–70,000✔
- 70,000–1,00,000
- Secretory component is present in
- IgA✔
- IgG
- IgM
- All of these
- The variable region of light chains is the
- N-terminal quarter
- N-terminal half✔
- C-terminal quarter
- C-terminal half
- The variable region of light chains has
- One hypervariable region
- Two hypervariable regions
- Three hypervariable regions✔
- Four hypervariable regions
- The variable region of heavy chains has
- One hypervariable region
- Two hypervariable regions
- Three hypervariable regions
- Four hypervariable regions✔
- The most abundant immunoglobulin in plasma is
- IgA
- IgG✔
- IgM
- IgD
- The largest immunoglobulin is
- IgA
- IgG
- IgM✔
- IgD
- The plasma concentration of IgA is
- 1–5 mg/dl
- 40–200 mg/dl
- 60–500 mg/dl✔
- 700–1,500 mg/dl
- An immunoglobulin found in exocrine secretions is
- IgA✔
- IgG
- IgM
- IgE
- Allergic reactions are mediated by
- IgA
- IgG
- IgD
- IgE✔
- An immunoglobulin which can cross the placental barrier is
- IgA
- IgM
- IgD
- None of these✔
- The immunoglobulin having the longest half-life is
- IgA
- IgG✔
- IgM
- IgE
- The half-life of IgG is
- 2–3 days
- 5–6 days
- 8–10 days
- 20–25 days✔
- Recognition of antigen is the function of
- Variable region of light chains
- Variable regions of light and heavy chains✔
- Constant region of heavy chains
- Constant regions of light and heavy chains
- The effector function of antibody is performed by
- Variable region of light chains
- Constant region of heavy chains✔
- Variable regions of light and heavy chains
- Constant regions of light and heavy chains
- Complement system can be activated by binding of antigen to
- IgA
- IgD
- IgE
- IgM✔
- C1 component of classical complement pathway is made up of
- Complements 1q and 1r
- Complements 1q and 1s
- Complements 1r and 1s
- Complements 1q, 1r and 1s✔
- The components of complement systemare activated by
- Microsomal hydroxylation
- Phosphorylation
- Glycosylation
- Proteloysis✔
- The component system forms a membrane attack complex made up of
- Complements 1q, 1r and 1s
- Complements 1, 2, 3 and 4
- Complements 5b, 6, 7 and 8✔
- Factors B and D
- Factors B and D are required in
- The classical pathway of complement fixation
- The alternate complement pathway✔
- Both (The classical pathway of complement fixation) and (The alternate complement pathway)
- None of these
- The alternate complement pathway doesn’t involve
- Antigen-antibody complex✔
- Complement 3
- Factors B and D
- Membrane attack unit
- Antibody diversity arises from
- Gene amplification
- Gene re-arrangement✔
- Alternative splicing
- All of these
- A light chain gene is constructed from the following segments:
- Variable and constant segments
- Variable, joining and constant segments✔
- Variable, diversity and constant segments
- Variable, joining, diversity and constant segments
- In metabolic point of view, amino acids are classified as
- Glycogenic
- Ketogenic
- Glycogenic or Ketogenic✔
- All of these
- Diversity segments are present in
- Light chain genes
- Heavy chain genes✔
- Light and heavy chain genes
- None of these
- Constant segments of heavy chains are of
- Five types✔
- Six types
- Seven types
- Eight types
- Gamma heavy chains are of
- Two types
- Three types
- Four types✔
- Five types
- Gamma heavy chains are present in
- IgA
- IgG✔
- IgM
- IgD
- Heavy chains in IgD are of following type:
- Alpha
- Gamma
- Delta✔
- Epsilon
- On exposure to any antigen, the first antibody to be formed is of the following class:
- IgA
- IgG
- IgM✔
- IgE
- Cell-mediated immunity is the function of
- B lymphocytes
- T lymphocytes✔
- Plasma cells
- Basophils
- The most abundant T cells are
- Cytotoxic T cells
- Helper T cells✔
- Suppressor T cells
- Memory T cells
- T cells can recognise
- Free antigens
- Antigens bound to cells
- Antigens bound to antibodies
- Antigens bound to MHC proteins✔
- MHC proteins are unique to
- Each cell
- Each organ
- Each individual✔
- Each species
- MHC class I proteins are present on the surface of
- B cells only
- T cells only
- Macrophages only
- All cells✔
- MHC class I proteins, in conjunction with antigens are recognised by
- Cytotoxic T cells✔
- Helper T cells
- Suppressor T cells
- Memory T cells
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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