चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) MD / MS / MDS प्रवेश परीक्षा तयारी
चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) – MD / MS / MDS प्रवेश परीक्षा
MECEE-PG – MD/MS/MDS · MECEE-PG (MD/MS/MDS)
२,८६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MD/MS/MDS 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 positive rapid urease test on a gastric biopsy indicates infection with:
सही उत्तर: ग) Helicobacter pylori
H. pylori produces large amounts of urease, which splits urea to ammonia and raises the pH, changing the indicator colour. Proteus is also urease-positive but is linked to struvite urinary stones, not gastric biopsies.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The coagulase test is used to differentiate:
सही उत्तर: क) Staphylococcus aureus from coagulase-negative staphylococci
S. aureus produces coagulase, which converts fibrinogen to fibrin, whereas S. epidermidis and S. saprophyticus are coagulase-negative. Staphylococci are distinguished from streptococci by the catalase test.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Sensitivity to bacitracin is used as a presumptive test for:
सही उत्तर: घ) Streptococcus pyogenes
Group A beta-haemolytic streptococci are sensitive to bacitracin, while most other beta-haemolytic streptococci are resistant. Pneumococcus is identified by optochin sensitivity and bile solubility.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Pseudomembranous colitis following antibiotic therapy is most commonly caused by:
सही उत्तर: ख) Clostridioides (Clostridium) difficile
Antibiotics disrupt normal gut flora, allowing toxin A- and B-producing C. difficile to overgrow and form pseudomembranes. Diagnosis is by stool toxin or PCR, and oral vancomycin or fidaxomicin is used for treatment.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Nagler reaction is used to identify:
सही उत्तर: क) Clostridium perfringens
The Nagler reaction detects the lecithinase activity of C. perfringens alpha-toxin on egg-yolk agar; opacity is inhibited on the half with antitoxin. C. perfringens is the main cause of gas gangrene.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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'Drumstick' appearance due to round terminal spores is characteristic of:
सही उत्तर: घ) Clostridium tetani
C. tetani has spherical terminal spores wider than the bacillus, giving a drumstick or tennis racket look. Bacillus anthracis is non-bulging spored and forms 'bamboo stick' chains.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Thiosulphate citrate bile salt sucrose (TCBS) agar is selective for:
सही उत्तर: क) Vibrio cholerae
V. cholerae ferments sucrose and forms yellow colonies on TCBS, an alkaline selective medium. Salmonella and Shigella are cultured on media such as XLD, DCA or SS agar.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Elek's gel precipitation test is used to detect:
सही उत्तर: घ) Toxigenicity of Corynebacterium diphtheriae
The Elek test is an in-vitro immunodiffusion test showing precipitation lines where diphtheria toxin meets antitoxin. The Schick test, by contrast, assessed a person's susceptibility to diphtheria.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Gram-negative, kidney-shaped intracellular diplococci in urethral pus of a man with urethritis suggest:
सही उत्तर: ख) Neisseria gonorrhoeae
N. gonorrhoeae appears as Gram-negative diplococci with adjacent flat sides, inside neutrophils. Chlamydia is an obligate intracellular organism not seen on Gram stain and causes non-gonococcal urethritis.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Lewy bodies, characteristic of Parkinson disease, are composed mainly of:
सही उत्तर: ग) Alpha-synuclein
Lewy bodies are eosinophilic intracytoplasmic inclusions of alpha-synuclein in neurons of the substantia nigra. Hyperphosphorylated tau forms neurofibrillary tangles in Alzheimer disease.
💬 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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