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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Which of the following best describes the role of lysosomes in cells? (a) They are involved in protein synthesis and modification. (b) They contain enzymes for breaking down cellular waste materials and debris. (c) They are responsible for generating energy through oxidative phosphorylation. (d) They primarily function in lipid metabolism.
सही उत्तर: ख) (b) They contain enzymes for breaking down cellular waste materials and debris.
Lysosomes are organelles containing digestive enzymes that break down damaged cell components and recycle materials, a process critical for cellular homeostasis. Options (a), (c) and (d) describe other metabolic functions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of osteocalcin is: (a) Promoting bone resorption. (b) Stimulating collagen synthesis in bone matrix formation. (c) Inhibiting calcium absorption from the intestine. (d) Directing angiogenesis within skeletal tissues.
सही उत्तर: ख) (b) Stimulating collagen synthesis in bone matrix formation.
Osteocalcin plays a crucial role in bone mineralization by stimulating collagen production and promoting osteoblast differentiation. Options (a) and (c) describe opposing actions, while (d) is the function of other factors.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements accurately describes the primary function of carbonic anhydrase? (a) Catalyzing the hydrolysis of ATP to ADP and inorganic phosphate. (b) Facilitating the conversion of carbon dioxide and water into bicarbonate ions. (c) Promoting the breakdown of glucose for energy production. (d) Regulating sodium ion transport across cell membranes.
सही उत्तर: ख) (b) Facilitating the conversion of carbon dioxide and water into bicarbonate ions.
Carbonic anhydrase is a key enzyme involved in maintaining acid-base balance by catalyzing the reaction between CO2 and H2O, producing H+ and bicarbonate ions. Option (a) describes ATP hydrolysis, (c) glucose breakdown, and (d) sodium transport are unrelated functions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A female patient presents with irregular menstrual cycles and amenorrhea. Examination reveals a small, non-palpable uterus. What syndrome is she MOST likely suffering from?
सही उत्तर: ख) Mayer-Rokitansky-Kuster-Hauser (MRKH) Syndrome
Mayer-Rokitansky-Kuster-Hauser (MRKH) syndrome (option 1) is defined by the absence of a uterus and vagina. PCOS (option 2) causes irregular menstrual cycles but does not typically result in absent uterus development. Thyroid dysfunction (option 3) can lead to menstrual irregularities, but not an absent uterus. Androgen Insensitivity Syndrome (option 4) results from the body's inability to respond to androgens.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a premature infant with respiratory distress syndrome, which of the following findings on chest radiography would MOST strongly suggest severe disease?
सही उत्तर: ख) Air bronchograms
Smooth lung fields (option 1) are characteristic of mild respiratory distress syndrome. Air bronchograms (option 2) can be present but are not always indicative of severe disease. Consolidation in the lower lobes (option 3) suggests pneumonia, while increased heart size (option 4) is not a primary finding in RDS.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A newborn infant is diagnosed with kernicterus. What is the primary pathological mechanism behind this condition?
सही उत्तर: ग) Deposition of unconjugated bilirubin in the basal ganglia
Deposition of unconjugated bilirubin (option 2) within the basal ganglia is the fundamental cause of kernicterus. Increased bilirubin production (option 1) and immune responses (option 3) contribute to the overall situation but are not the direct mechanism of neuronal damage. A uridine reductase deficiency (option 4) can contribute, but the primary issue is bilirubin deposition.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A pregnant woman presents with severe headache, visual disturbances, and edema. Her urine protein level is elevated. Which of the following conditions is she MOST likely experiencing?
सही उत्तर: ख) Pre-eclampsia
Pre-eclampsia (option 1) is characterized by new-onset hypertension coupled with proteinuria and/or end-organ dysfunction, fitting the clinical presentation perfectly. Gestational diabetes mellitus (option 2), while possible, doesn't explain the hypertensive component. Thrombophlebitis (option 3) would not cause these systemic symptoms. Hypothyroidism (option 4) is unlikely to present with such severe hypertension and proteinuria.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient is diagnosed with a Meckel's diverticulum that contains gastric mucosa and produces hydrochloric acid. What term best describes this condition?
सही उत्तर: घ) Hemorrhagic Diverticulum
Option 3 (Gastric Adenoma) is correct. A Meckel’s diverticulum containing gastric-type mucosa, particularly when it produces acid, develops into a gastric adenoma. This demonstrates the potential for aberrant development of the digestive tract. The other options relate to different types of diverticular lesions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient presents with an inguinal hernia characterized by protrusion through the inferior epigastric canal. Which anatomical structure is primarily involved?
सही उत्तर: क) Inguinal Ring
Option 0 (Inguinal Ring) is correct. The inferior epigastric canal is a key component of the inguinal ring, through which abdominal contents can protrude when the abdominal muscles relax during straining or increased intra-abdominal pressure, leading to an inguinal hernia. The other rings are involved in different types of hernias.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The presence of bruising over the mastoid process (Battle’s sign) is frequently observed in patients with head injuries. What does this finding typically indicate?
सही उत्तर: क) Subdural Hematoma
Option 0 (Subdural Hematoma) is correct. Battle's sign represents bleeding from the middle meningeal artery, which often accompanies a subacute subdural hematoma following head trauma. The other options represent different types of intracranial hemorrhage with distinct clinical presentations.
💬 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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