प्याथोलोजी, माइक्रोबायोलोजी र फार्माकोलोजी – Pathology, Microbiology & Pharmacology MCQ
प्याथोलोजी, माइक्रोबायोलोजी र फार्माकोलोजी – MD/MS प्रवेश
Pathology, Microbiology & Pharmacology · MECEE-PG – MD/MS/MDS Entrance · ४०८ प्रश्न
४०८ प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्याथोलोजी, माइक्रोबायोलोजी र फार्माकोलोजी: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
Which of the following best describes the pathogenesis of Pneumonia caused by Streptococcus pneumoniae? (a) Neutrophil infiltration and alveolar edema due to overwhelming host defenses. (b) Macrophage activation and subsequent release of cytokines leading to inflammation. (c) Direct invasion of the lung parenchyma by the bacteria causing necrosis and abscess formation. (d) Rapid proliferation of pneumococci in the alveoli, resulting in hyphal growth and tissue damage.
सही उत्तर: ख) Macrophage activation and subsequent release of cytokines leading to inflammation.
Option 1 is correct as it accurately describes the immunological response – neutrophils are key to fighting S. pneumoniae pneumonia. Options a, c, and d are incorrect because they misrepresent the mechanism of infection and inflammation (pneumonia doesn't involve hyphal growth or direct bacterial necrosis as primary mechanisms).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A patient is diagnosed with disseminated intravascular coagulation (DIC). Which cellular component would you MOST expect to find in significantly elevated numbers?
सही उत्तर: ख) Neutrophils
DIC is characterized by a systemic activation of the clotting cascade, leading to widespread microthrombi formation. Elevated neutrophils are typical of this response as they are recruited to sites of inflammation and thrombosis. Lymphocytes, platelets, and macrophages are not primary indicators in DIC.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following conditions is MOST strongly associated with the presence of amyloid deposition in various organs?
सही उत्तर: ग) Diabetic Nephropathy
Amyloidosis, particularly diabetic nephropathy, results from increased production and abnormal deposition of amyloid proteins. Rheumatoid arthritis and SLE are autoimmune diseases with different primary pathological features. Celiac disease involves gluten sensitivity, not amyloid deposition.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The presence of intranuclear inclusions within infected cells strongly suggests which type of viral replication?
सही उत्तर: क) Lytic Replication
Intranuclear inclusions are a characteristic feature of the lytic cycle of many viruses, where the viral genome replicates and produces new viral particles. Budding involves release of virions without creating inclusions. Reverse transcription is associated with retroviruses. Direct integration doesn’t result in inclusions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A patient presents with severe abdominal pain, fever, and bloody diarrhea suggestive of Clostridium difficile infection. Which laboratory finding would MOST strongly support this diagnosis?
सही उत्तर: ग) Positive rapid urease test in the colon
The positive rapid urease test is a hallmark of *C. difficile*, as it produces hydrogen ions that lower the pH, facilitating bacterial growth. Elevated albumin and decreased WBC counts are less specific. *E. coli* is common but not diagnostic of this infection.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following best describes the mechanism of action of penicillin?
सही उत्तर: ख) Binding to ribosomes and preventing protein synthesis
Penicillin inhibits bacterial cell wall synthesis by binding to peptidoglycan precursors. The other options represent mechanisms used by different drugs with distinct actions. Inhibition of DNA gyrase is a characteristic of quinolones.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In Gram staining, iodine serves what crucial function?
सही उत्तर: ख) It enhances the binding of crystal violet to bacterial cell walls
Iodine is a mordant – it reacts with the crystal violet dye, forming a more stable complex that adheres strongly to the bacterial cell wall. This helps retain the purple/blue color during subsequent washes, differentiating Gram-positive from Gram-negative bacteria.”}]} “]” 1694325714047386649
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A patient undergoing sterilization in an autoclave requires precise control over temperature and pressure. What are the standard conditions for effective sterilization?
सही उत्तर: ख) 0.75 atmospheres at 121°C for 15 minutes
Standard autoclaving utilizes a saturated steam environment at 1.5 atmospheres of pressure and 121°C for a minimum of 15 to 20 minutes to ensure complete sterilization, as outlined by pharmacopeial standards.”}],
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following fungal species is known for exhibiting dimorphism, growing as a mold at 25°C and as yeast at 37°C?
सही उत्तर: ख) Candida albicans
*Candida albicans* is a classic example of a dimorphic fungus. It exists as a filamentous mold form at lower temperatures and reverts to a yeast form at warmer temperatures, allowing it to thrive in various environments. The other options represent fungi that generally maintain a single morphotype.”}],
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A patient presents with teardrop-shaped red blood cells (dacrocytes) alongside a leucoerythroblastic blood picture and a ‘dry tap’ on marrow aspiration. Which of the following conditions is most consistent with this clinical presentation?
सही उत्तर: ग) Myelodysplastic Syndrome
Teardrop cells (dacrocytes) are characteristic of myelofibrosis and MDS, reflecting ineffective erythropoiesis. The leucoerythroblastic picture indicates immature red blood cells in the peripheral circulation. A ‘dry tap’ suggests impaired marrow function – all features of MDS.”}],
💬 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।