मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · २,०३९ प्रश्न
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
CEE 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 is a key characteristic differentiating prokaryotic cells (like bacteria) from eukaryotic cells (like those found in animals and plants)?
सही उत्तर: ख) B. Eukaryotic cells possess a nucleus housing their genetic material.
The defining difference is the presence of a nucleus in eukaryotic cells, which protects and organizes DNA. Prokaryotes do not have this internal membrane-bound compartment. Options B, C, and D are inaccurate distinctions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The coordinated movement of cilia in the respiratory tract primarily serves which purpose?
सही उत्तर: ख) B. To filter inhaled particles and mucus from the airways.
Cilia beat in a synchronized manner to move mucus and trapped particles upwards out of the lungs, preventing them from reaching the delicate alveolar tissue where gas exchange occurs. Options A, C, and D are incorrect functions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of exocytosis, where vesicles fuse with the plasma membrane releasing their contents into the extracellular space, is primarily involved in:
सही उत्तर: ख) B. Waste removal from cells and secretion of hormones.
Exocytosis is the mechanism by which cells release substances – like enzymes or neurotransmitters – into their surroundings. Option A relates to cell division; option C describes maintaining cellular structure, and option D pertains to metabolism.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a titration experiment, if the indicator changes color close to the equivalence point, what does this suggest?
सही उत्तर: ख) The endpoint has been reached
A change in indicator color near the equivalence point signifies that the solution is approaching the stoichiometric ratio where the acid and base have completely reacted. The other options describe different titration behaviors.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following compounds will produce the largest volume of gas upon complete neutralization with a strong acid at room temperature (298 K)?
सही उत्तर: घ) NaNO₃
The amount of gas produced depends on the valency and stoichiometry of the ions. NaNO₃ produces three moles of gas (NO₂) upon neutralization, while the other compounds produce fewer.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of adding a small amount of a substance to a solution to prevent precipitation without affecting the main reaction is called:
सही उत्तर: ख) Titration
Titration involves adding a known concentration of acid or base to determine the concentration of another. The other options describe different chemical processes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following salts is insoluble in water according to the solubility rules of Nepal?
सही उत्तर: घ) Al₂ (SO₄)₃
According to Nepali solubility rules, sulfates generally form insoluble salts with metals like aluminum. NaCl and KCl are highly soluble ionic compounds. Magnesium sulfate is a common soluble salt.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process of pollination, where pollen grains are transferred from the stamen to the pistil, involves various agents. Which of these represents a primary agent of wind pollination?
सही उत्तर: ग) Pollen carried by air currents
Wind pollination (anemophily) relies on the passive movement of pollen grains through the air. While bees and butterflies are pollinators, their involvement isn't direct transmission by wind; spiders don’t typically play a role in pollen transfer.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The phenomenon of crassulaceacidic acid metabolism (CAM) is primarily observed in which plant types?
सही उत्तर: ख) C4 plants adapting to arid environments
CAM photosynthesis allows plants to fix CO2 at night when temperatures are cooler and humidity is higher, minimizing water loss. This adaptation is characteristic of C4 plants thriving in stressful conditions like drought. Option 2 is correct; options 3 & 4 describe different photosynthetic pathways or plant adaptations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Calvin cycle begins with the carboxylation of RuBP by CO2. What molecule acts as the initial CO2 acceptor in this process?
सही उत्तर: क) RuBisCO
RuBisCO (RuDP carboxylase/oxygenase) is the enzyme that catalyzes the first major step of carbon fixation in the Calvin cycle – the attachment of CO2 to RuBP. The other options are intermediates or products within the cycle, not the initial acceptor.
💬 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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