medical MCQs – Page 250

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

4981. The major functional difference between DNA and RNA is_____________?
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A. DNA is localized in nucleus

B. DNA carries the information in all organizations

C. RNA contains ribose

D. RNA does not contain thymine

4982. Open faced nucleus in a cell signifies______________?
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A. that the cell is active

B. That the cell is resting

C. nothing

D. that the cell is in transition phase

4983. Cyanosis or bluish coloration of skin and mucus membrane depends upon______________?
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A. Thickness of the skin

B. The absolute amount of reduced hemoglobin

C. The relative proportion of reduced and oxygenated hemoglobin

D. Fragility of capillaries

4984. Arterial O2 content is reduced in one of following ______________?
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A. Hypoxic or arterial hypoxia

B. Anemic hypoxia

C. Stagnant hypoxia

D. Histotoxic hypoxia

4985. Intracellular and interstitial body fluids have similar______________?
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A. Total osmotic pressure

B. Colloid osmotic pressure

C. Chloride ion concentrations

D. Potassium ion concentrations

4986. Skeletal muscles_____________?
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A. Contracts when actin and myosin filaments shorten

B. Contracts when calcium is taken up by sarcoplasmic reticulum

C. Contraction is initiated by calcium binding to troponin

D. Contraction is initiated by calcium binding to tropomyosin

4987. Patient with anemia tends to have all, except________________?
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A. Pallor of mucous membranes

B. Increased incidence of heart murmurs

C. Compensatory increase in cardiac output

D. A low PO2 in arterial blood

4988. Hematocrit relates to which of the following______________?
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A. Total blood volume

B. Total RBC volume

C. Plasma filtrate

D. Total WBC vlume

4989. Functional unit of kidney is______________?
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A. Glomerulus

B. Nephron

C. Loop of Henle

D. Collecting ducts

4990. Which of the following is not useful for coagulation______________?
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A. Calcium

B. Thrombin

C. Fibrin

D. Plasmin

4991. Which of the following causes lysis of clot______________?
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A. Fibrin

B. Coagulase

C. Plasmin

D. Hyaluronidase

4992. The principal site for granulocytic hemopoiesis in the adult human is________________?
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A. The spleen

B. The liver

C. Yellow bone marrow

D. Red bone marrow

4993. Tendon (or) ligament is attached to a bone through ____________?
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A. Interstitial fibers

B. Haversian fibers

C. Tomes fibers

D. Sharpeys fibers

4994. In PHC, which anticoagulant is used to send the blood sample for blood glucose_____________?
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A. EDTA

B. Heparin

C. Potassium oxalate

D. Potassium oxalate+ sodium fluoride

4995. IN acute infection which of the following is found_______________?
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A. Neutropenia

B. Leukocytosis

C. Leucopenia

D. Neutrophilia

4996. A patient with A ve blood group can receive blood from_______________?
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A. B negative donor

B. A negative donor

C. Positive donor

D. AB positive donor

4997. Carbon monoxide poisoning causes_______________?
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A. Diffusion capacity of lungs decreases

B. Hypoxic hypoxia

C. Oxygen dissociation curve shifts to left

D. Cyanosis

4998. What is the glomerular filtration rate ?
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A. 125 ml/min

B. 150 ml/min

C. 100 ml/min

D. 175 ml/min

4999. The kidney secrete all of the following hormones except_____________?
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A. Vasopressin

B. Renin

C. 1,2,5 Dihydroxy cholecalciferol

D. Erythropoietin

5000. Major portion of glomerular filtrate is absorbed in__________________?
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A. Loop of Henle

B. Proximal segment

C. Distal convoluted tubule

D. Collecting duct

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