चिकित्सा शिक्षा आयोग (CEE) बीडीएस प्रवेश परीक्षा तयारी
चिकित्सा शिक्षा आयोग (CEE) – बीडीएस प्रवेश परीक्षा
CEE – BDS Entrance · Medical Education Commission – CEE
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MBBS/BDS/Nursing 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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The white blood cells whose number typically rises in allergic reactions and in infections by parasitic worms are the:
सही उत्तर: ग) eosinophils
Eosinophils (normally about 2–3% of WBCs) resist infections by helminths and are associated with allergic reactions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The plasma of a person with blood group A contains:
सही उत्तर: ख) anti-B antibodies
Group A individuals have antigen A on their RBCs and naturally occurring anti-B antibodies in their plasma.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Mature red blood cells of most mammals, including humans, differ from those of frogs and birds in that they:
सही उत्तर: ग) lack a nucleus
Mammalian RBCs lose the nucleus (and most organelles) during maturation, becoming biconcave and enucleate, which leaves more room for haemoglobin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a normal electrocardiogram (ECG), the P wave represents:
सही उत्तर: ग) depolarisation of the atria
The P wave is produced by atrial depolarisation, which leads to atrial contraction; the T wave represents ventricular repolarisation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Under normal resting conditions, every 100 mL of oxygenated blood delivers about how much oxygen to the tissues?
सही उत्तर: ख) 5 mL
100 mL of oxygenated blood carries about 20 mL O₂, of which about 5 mL is given up to the tissues at rest.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The partial pressures of oxygen and carbon dioxide in human alveolar air are about:
सही उत्तर: ख) pO₂ 104 mm Hg and pCO₂ 40 mm Hg
Alveolar air has pO₂ ≈ 104 mm Hg and pCO₂ ≈ 40 mm Hg; atmospheric air has pO₂ ≈ 159 and tissues have pO₂ ≈ 40, pCO₂ ≈ 45.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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During normal inspiration in humans, the diaphragm:
सही उत्तर: घ) contracts and becomes flatter
Contraction flattens the diaphragm, increasing the volume of the thoracic cavity so that air flows into the lungs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The expiratory reserve volume (ERV) of a healthy adult human is about:
सही उत्तर: क) 1000–1100 mL
ERV, the extra air that can be forcibly expired after a normal expiration, is about 1000–1100 mL; 500 mL is the tidal volume.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Emphysema, a chronic lung disorder common in cigarette smokers, involves:
सही उत्तर: घ) damage to alveolar walls, reducing the respiratory surface
In emphysema the alveolar walls break down, so the gas-exchange surface decreases; smoking is a major cause.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The enzyme that rapidly converts CO₂ and water into carbonic acid inside red blood cells is:
सही उत्तर: घ) carbonic anhydrase
Carbonic anhydrase in RBCs speeds up CO₂ + H₂O ⇌ H₂CO₃, which then dissociates to HCO₃⁻ and H⁺.
💬 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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