स्नातकोत्तर मेडिकल प्रवेश (MECEE-PG)
स्नातकोत्तर मेडिकल प्रवेश (MECEE-PG)
MECEE-PG – MD/MS/MDS Entrance · २,८६५ प्रश्न
२,८६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MD/MS प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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A patient presents with symptoms including muscle cramps and myoglobinuria following intense exercise. Blood lactate levels are normal. Which biochemical pathway is MOST likely involved in this presentation? (a) Glycolysis. (b) The Krebs cycle (Citric Acid Cycle). (c) Beta-oxidation of fatty acids. (d) Ketogenesis.
सही उत्तर: घ) (d) Ketogenesis.
The patient’s symptoms – muscle cramps and myoglobinuria with normal lactate – point to ketogenesis. Beta-oxidation is involved in fat metabolism, but doesn't directly cause these symptoms. Glycolysis produces lactate, and the Krebs cycle supports ATP production, neither of which fits the clinical picture. Ketogenesis (production of ketone bodies) is linked to this presentation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the primary function of erythrocytes (red blood cells)? (a) Facilitating nutrient absorption in the small intestine. (b) Transporting oxygen from the lungs to tissues throughout the body. (c) Initiating immune responses against pathogens. (d) Regulating blood pressure and coagulation.
सही उत्तर: ख) (b) Transporting oxygen from the lungs to tissues throughout the body.
The correct answer is (b). Erythrocytes are specialized for oxygen transport due to their high concentration of hemoglobin. Option (a) describes the function of the small intestine, (c) refers to leukocytes, and (d) concerns platelets and vascular tone.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 30-year-old female presents with recurrent left nipple discharge. Imaging reveals a discrete lesion on the nipple. What is the MOST appropriate surgical management strategy?
सही उत्तर: क) Wide Local Excision of the Nipple Lesion
Option 0 (Wide Local Excision of the Nipple Lesion) is correct. This approach targets the likely source of the discharge while preserving as much tissue as possible. Options 1, 2, and 3 are less effective treatments for nipple discharge associated with a discrete lesion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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During laparoscopic cholecystectomy, the surgeon observes the presence of gallstones within the cystic duct and common bile duct. Which surgical intervention is required to definitively address this finding?
सही उत्तर: ग) Bile Duct Recanalization via Endoscopic Retrograde Cholangiopancreatography (ERCP)
Option 2 (Bile Duct Recanalization via ERCP) is correct. Gallstones within the CBD require intervention, and ERCP offers a minimally invasive method to clear the obstruction.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 55-year-old male undergoes surgical resection of a liver mass identified as a cholangiocarcinoma at the confluence of the common hepatic duct and right portal vein. Which surgical technique is MOST crucial to prevent biliary complications postoperatively?
सही उत्तर: क) Hepaticojejunostomy with Roux-en-Y Anastomosis
Option 0 (Hepaticojejunostomy with Roux-en-Y Anastomosis) is correct. This technique provides optimal biliary drainage and reduces the risk of biliary leaks, a significant complication in this scenario. Options 1, 2, and 3 are less suitable reconstructions for a complex biliary anatomy.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the primary surgical management for acute appendicitis involving an inflamed appendix with localized peritonitis?
सही उत्तर: क) Laparoscopic Appendectomy
Option 0 (Laparoscopic Appendectomy) is correct as it’s the current standard of care for uncomplicated acute appendicitis. The inflamed appendix is removed via a minimally invasive technique. Options 1, 2, and 3 represent older or less effective approaches to this common condition.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the primary mechanism by which erythromycin inhibits bacterial protein synthesis?
सही उत्तर: ग) C. Blockage of peptide bond formation
The correct answer is C, as erythromycin is a macrolide antibiotic that specifically binds to the 50S ribosomal subunit, blocking the formation of peptide bonds during protein synthesis. Options A, B, and D represent mechanisms of action for different classes of antibiotics.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which enzyme is directly involved in the conversion of fibrinogen into fibrin during blood coagulation?
सही उत्तर: ख) Thrombin
Thrombin, a serine protease produced early in the clotting cascade, cleaves fibrinogen to form fibrin monomers. These monomers then self-assemble to create the stable fibrin meshwork that forms the clot. The other options are involved earlier stages or alternative pathways of coagulation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Golgi apparatus plays a vital role in cellular function. Which of the following is its primary contribution to protein synthesis?
सही उत्तर: ख) Modifying and packaging proteins for secretion
The Golgi apparatus functions as a processing center, specifically modifying and packaging proteins – including those destined for secretion. It also adds carbohydrates to proteins (glycosylation). The other options describe functions of ribosomes or other cellular organelles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In response to a decrease in arterial oxygen levels, central chemoreceptors in the medulla oblongata respond by increasing ventilation. What is the primary mechanism behind this effect?
सही उत्तर: ख) Increased production of erythropoietin
Central chemoreceptors are highly sensitive to changes in hydrogen ion (H+) concentration, which is directly influenced by PaO2 (partial pressure of oxygen). An increased PaO2 leads to a decrease in H+ levels, stimulating the central chemoreceptors to boost ventilation. The other options describe alternative physiological responses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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