6151 to 6200 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 6151 to 6200
- Which of the following is not essential fatty acids?
- Oleic acid ✔
- Linoleic acid
- Arachidonic acid
- Linolenic acid
- The caloric value of lipids is
- 6.0 Kcal/g
- 9.0 Kcal/g ✔
- 15.0 Kcal/g
- 12.0 Kcal/g
- The maximum number of double bonds present in essential fatty acid is
- 2
- 3 ✔
- 4
- 5
- Prostaglandin synfhesis is increased by activating phospholipases by
- Mepacrine
- Angiotensin II ✔
- Glucocorticoids
- Indomenthacin
- Selwanof’s test is positive in
- Glucose
- Fructose ✔
- Galactose
- Mannose
- Spermatozoa in seminal fluid utilises the following sugar for metabolism:
- Galactose
- Glucose
- Sucrose
- Fructose ✔
- Depot fats of mammalian cells comprise mostly of
- Cholesterol
- Phospholipid
- Cerebrosides
- Triglycerol✔
- When choline of lecithin is replaced by ethanolamine, the product is
- Spingomyelin
- Cephalin ✔
- Plasmalogens
- Lysolecithin
- Which of the following is a hydroxyl fatty acid?
- Oleic Acid
- Ricinoleic acid ✔
- Caproic acid
- Arachidonic acid
- Acroleic test is given by
- Cholesterol
- Glycerol ✔
- Glycosides
- Sphingol
- Vitamins are
- Accessory food factors ✔
- Generally synthesized in the body
- Produced in endocrine glands
- Proteins in nature
- Vitamin A or retinal is a
- Steroid
- Polyisoprenoid compound containing a cyclohexenyl ring ✔
- Benzoquinone derivative
- 6-Hydroxychromane
- β-Carotene, precursor of vitamin A, is oxidatively cleaved by
- β-Carotene dioxygenase ✔
- Oxygenase
- Hydroxylase
- Transferase
- Retinal is reduced to retinol in intestinal mucosa by a specific retinaldehyde reductase utilising
- NADPH + H+ ✔
- FAD
- NAD
- NADH + H+
- Preformed Vitamin A is supplied by
- Milk, fat and liver ✔
- All yellow vegetables
- All yellow fruits
- Leafy green vegetables
- Retinol and retinal are interconverted requiring dehydrogenase or reductase in the presence of
- NAD or NADP ✔
- NADH + H+
- NADPH
- FAD
- Fat soluble vitamins are
- Soluble in alcohol
- one or more Propene units
- Stored in liver
- All these✔
- The international unit of vitamin A is equivalent to the activity caused by
- 0.3 µg of Vitamin A alcohol ✔
- 0.344 µg of Vitamin A alcohol
- 0.6 µg of Vitamin A alcohol
- 1.0 µg of Vitamin A alcohol
- Lumirhodopsin is stable only at temperature below
- –10°C
- –20°C
- –40°C
- –50°C ✔
- Retinol is transported in blood bound to
- Aporetinol binding protein ✔
- α2-Globulin
- β-Globulin
- Albumin
- The normal serum concentration of vitamin A in mg/100 ml is
- 5–10
- 15–60✔
- 100–150
- 0–5
- One manifestation of vitamin A deficiency is
- Painful joints
- Night blindness ✔
- Loss of hair
- Thickening of long bones
- Deficiency of Vitamin A causes
- Xeropthalmia ✔
- Hypoprothrombinemia
- Megaloblastic anemia
- Pernicious anemia
- An important function of vitamin A is
- To act as coenzyme for a few enzymes
- To play an integral role in protein synthesis
- To prevent hemorrhages
- To maintain the integrity of epithelial tissue ✔
- Retinal is a component of
- Iodopsin
- Rhodopsin ✔
- Cardiolipin
- Glycoproteins
- Retinoic acid participates in the synthesis of
- Iodopsin
- Rhodopsin
- Glycoprotein ✔
- Cardiolipin
- On exposure to light rhodopsin forms
- All trans-retinal ✔
- Cis-retinal
- Retinol
- Retinoic acid
- Carr-Price reaction is used to detect
- Vitamin A ✔
- Vitamin D
- Ascorbic acid
- Vitamin E
- The structure shown below is of
- Cholecalciferol ✔
- 25-Hydroxycholecalciferol
- Ergocalciferol
- 7-Dehydrocholesterol
- Vitamin D absorption is increased in
- Acid pH of intestine ✔
- Alkaline pH of intestine
- Impaired fat absorption
- Contents of diet
- The most potent Vitamin D metabolite is
- 25-Hydroxycholecalciferol
- 1,25-Dihydroxycholecalciferol ✔
- 24, 25-Dihydroxycholecalciferol
- 7-Dehydrocholesterol
- The normal serum concentration of 25-hydroxycholecalciferol in ng/ml is
- 0–8
- 60–100
- 100–150
- 8–55 ✔
- The normal serum concentration of 1,25- dihydroxycholecalciferol in pg/ml is
- 26–65 ✔
- 1–5
- 5–20
- 80–100
- The normal serum concentration of 24,25- dihydroxycholecalciferol in ng/ml is
- 8–20
- 25–50
- 1–5 ✔
- 60–100
- Deficiency of vitamin D causes
- Ricket and osteomalacia ✔
- Tuberculosis of bone
- Hypthyroidism
- Skin cancer
- One international unit (I.U) of vitamin D is defined as the biological activity of
- 0.025 µg of cholecalciferol ✔
- 0.025 µg of 7-dehydrocholecalciferol
- 0.025 µg of ergosterol
- 0.025 µg of ergocalciferol
- The β-ring of 7-dehydrocholesterol is cleaved to form cholecalciferol by
- Infrared light
- Dim light
- Ultraviolet irridation with sunlight ✔
- Light of the tube lights
- Calcitriol synthesis involves
- Both liver and kidney ✔
- Intestine
- Adipose tissue
- Muscle
- The activity of tocopherols is destroyed by
- Commercial cooking ✔
- Reduction
- Conjugation
- All of these
- The requirement of vitamin E is increased with greater intake of
- Carbohydrates
- Proteins
- Polyunsaturated fat ✔
- Saturated fat
- Vitamin E reduces the requirement of
- Iron
- Zinc
- Selenium ✔
- Magnesium
- The most important natural antioxidant is
- Vitamin D
- Vitamin E ✔
- Vitamin B12
- Vitamin K
- Tocopherols prevent the oxidation of
- Vitamin A ✔
- Vitamin D
- Vitamin K
- Vitamin C
- Creatinuria is caused due to the deficiency of vitamin
- A
- K
- E ✔
- D
- All the following conditions produce a real or functional deficiency of vitamin K except
- Prolonged oral, broad spectrum antibiotic therapy
- Total lack of red meat in the diet ✔
- The total lack of green leafy vegetables in the diet
- Being a new born infant
- Vitamin K is found in
- Green leafy plants✔
- Meat
- Fish
- Milk
- Function of Vitamin A:
- Healing epithelial tissues
- Protein synthesis regulation
- Cell growth
- All of these ✔
- Vitamin K2 was originally isolated from
- Soyabean
- Wheat gram
- Alfa Alfa
- Putrid fish meal ✔
- Vitamin synthesized by bacterial in the intestine is
- A
- C
- D
- K✔
- Vitamin K is involved in posttranslational modification of the blood clotting factors by acting as cofactor for the enzyme:
- Carboxylase ✔
- Decarboxylase
- Hydroxylase
- Oxidase
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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