5201 to 5250 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 5201 to 5250
- Consumption of raw eggs can cause deficiency of
- Calcium
- Lipoic acid
- Biotin✔
- Vitamin A
- Egg is poor in
- Essential amino acids
- Carbohydrates✔
- Avidin
- Biotin
- Cholesterol is present in all the following except
- Milk
- Fish
- Egg white✔
- Egg yolk
- Meat is rich in all of the following except
- Iron
- Fluorine✔
- Copper
- Zinc
- Kwashiorkor occurs when the diet is severely deficient in
- Iron
- Calories
- Proteins✔
- Essential fatty acids
- Clinical features of Kwashiorkor include all of the following except
- Mental retardation✔
- Muscle wasting
- Oedema
- Anaemia
- Kwashiorkor usually occurs in
- The post-weaning period✔
- Pregnancy
- Lactation
- Old age
- Marasmus occurs from deficient intake of
- Essential amino acids
- Essential fatty acids
- Calories✔
- Zinc
- Marasmus differs from Kwashiorkor in the which of these following respect
- Mental retardation occurs in kwashiorkor but not in marasmus
- Growth is retarded in kwashiorkor but not in marasmus
- Muscle wasting occurs in marasmus but not kwashiorkor
- Subcutaneous fat disappears in marasmus but not in kwashiorkor✔
- Energy reserves of an average well-fed adult man are about
- 50,000 kcal
- 100,000 kcal✔
- 200,000 kcal
- 300,000 kcal
- During starvation, the first reserve nutrient to be depleted is
- Glycogen✔
- Proteins
- Triglycerides
- Cholestero
- Synthesis of the following enzymes is increased during starvation.
- Digestive enzymes
- Gluconeogenic enzymes✔
- Urea cycle enzymes
- Glucokinase
- In hypoparathyroidism
- Plasma calcium and inorganic phosphorous are low
- Plasma calcium and inorganic phosphorous are high
- Plasma calcium is low and inorganic phosphorous high✔
- Plasma calcium is high and inorganic phosphorous low
- The number of amino acid residues in calcitonin in
- 9
- 32✔
- 51
- 84
- Calcitonin is synthesised in
- Parathyroid glands
- Thyroid gland✔
- Pars intermedia of pituitary
- Adrenal cortex
- Plasma calcium is lowered by
- Parathormone
- Calcitonin✔
- Aldosterone
- Deoxycorticosterone
- α Cells of Islets of Langerhans secrete
- Insulin
- Glucagon✔
- Somatostatin
- Cholecystokinin
- A/G ratio is
- Strength of proteins
- ratio of serum proteins✔
- ratio of ceruloplasmin
- None of these
- Insulin is made up of
- A single polypeptide chain having 51 amino acid residues
- A single polypeptide chain having 84 amino acid residues
- A-chain having 21 and B-chain having 30 amino acid residues✔
- A-chain having 30 and B-chain having 21 amino acid residues
- The number of amino acid residues in preproinsulin is
- 51
- 84
- 109✔
- 119
- Pre-proinsulin contains a signal sequence having
- 9 amino acid residues
- 19 amino acid residues✔
- 27 amino acid residues
- 33 amino acid residues
- The number of intra-chain disulphide bonds in pro-insulin:
- One
- Two
- Three✔
- Four
- Pentagastrin is a
- Naturally occurring form of gastrin
- Inactive metabolite of gastrin
- Active metabolite of gastrin
- Synthetic form of gastrin✔
- Secretion of gastrin is evoked by
- Entry of food into stomach
- Vagal stimulation
- Lower aliphatic alcohols
- All of these✔
- Gastrin stimulates
- Gastric motility
- Gastric secretion
- Both (Gastric motility ) and (Gastric secretion)✔
- None of these
- Secretin is made up of
- 17 amino acids
- 27 amino acids✔
- 37 amino acids
- 47 amino acids
- Secretin causes all of the following except
- Secretion of pancreatic juice
- Secretion of bile
- Inhibition of gastric secretion
- Stimulation of intestinal motility✔
- All of the following statements about cholecystokinin pancreozymin are true except
- It is secreted by mucosa of small intestine
- It stimulates secretion of pancreatic juice rich in enzymes
- It stimulates contraction of gall bladder
- It inhibits gastric motility✔
- All of the following statements about pancreatic somatostain are true except
- It is secreted by δ cells of islets of Langerhans
- It stimulates the secretion of gastrin✔
- It inhibits the secretion of secretin
- It inhibits the secretion of cholecystokinin pancreozymin
- Histidine is converted into histamine by
- Carboxylation
- Decarboxylation ✔
- Methylation
- Hydroxylation
- Histamine is synthesised in
- Brain
- Mast cells
- Basophils
- All of these✔
- Histamine causes all the following except
- Stimulation of gastric secretion
- Vasoconstriction✔
- Pruritus
- Increase in capillary permeability
- H2-receptors are blocked by
- Diphenhydramine
- Mepayramine
- Pyrilamine
- Cimetidine✔
- Serotonin is synthesised from
- Serine
- Phenylalanine
- Tyrosine
- Tryptophan✔
- All the following statements about serotonin are true except
- It causes vasolidatation✔
- It causes bronchoconstriction
- It is metabolized by monoamine oxidase
- Its metabolite is 5-hydroxyindole acetic acid
- All the following statements about angiotensin are true except
- Its precursor is an α2-globulin
- Its active form is an octapeptide
- It is a vasodilator✔
- It increases the secretion of aldosterone
- Methyl dopa decreases blood pressure by
- Inhibiting the synthesis of catecholamines✔
- Antagonising the action of aldosterone
- Stimulating the release of renin
- Inhibiting the breakdown of angiotensin
- Binding of gamma-aminobutyric acid to its receptors in brain increases the permeability of cell membrane to
- Cl–✔
- Na+
- K+
- Ca++
- Binding of acetylcholine to its receptors increases the permeability of cell membrane to
- Ca++
- Na+
- K+
- Na+ and K✔
- All of the following are glycoproteins except
- Collagen
- Albumin✔
- Transferrin
- IgM
- Sialic acids are present in
- Proteoglycans
- Glycoproteins
- Both (Proteoglycans) and (Glycoproteins)✔
- None of these
- Hyaluronidase hydrolyses
- Hyaluronic acid✔
- Chondroitin sulphate
- Heparin
- Hyaluronic acid and chondroitin sulphate
- The most abundant protein in bones is
- Collagen type I✔
- Collagen type II
- Collagen type III
- Non-collagen proteins
- The most abundant collagen in cartilages is
- Type I
- Type II
- Type III
- Type IV
- Collagen and elastin have the following similarity:
- Both are triple helices
- Both have hydroxyproline residues✔
- Both have hydrolysine residues
- Both are glycoproteins
- Abnormal collagen structure is seen in all of the following except
- I-cell disease✔
- Osteogenesis imperfecta
- Menke’s disease
- Ehlers-Danlos sydrome
- I-cell disease results from absence of the following from lysosomal enzymes:
- Signal sequence
- Mannose-6-phosphate✔
- Sialic acid
- A serine residue
- In I-cell disease, lysosomal enzymes
- Are not synthesised
- Are inactive
- Lack signal sequence
- Cannot reach lysosomes✔
- Renal glycosuria occurs due to
- Increased filtration of glucose in glomeruli
- Increased secretion of glucose by renal tubular cells
- Decreased reabsorption of glucose by renal tubular cells✔
- Increased conversion of glycogen into glucose in tubular cells
- Haematuria can occur in
- Haemolytic anaemia
- Mismatched blood transfusion
- Yellow fever
- Stone in urinary tract✔
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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