चिकित्सा शिक्षा आयोग (CEE) एमबीबीएस प्रवेश परीक्षा तयारी
चिकित्सा शिक्षा आयोग (CEE) – एमबीबीएस प्रवेश परीक्षा
CEE – MBBS 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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During spermatogenesis, the process of sperm maturation occurs predominantly within which structure?
सही उत्तर: क) Epididymis
The epididymis is responsible for the final stages of sperm development and maturation. The other options are involved in seminal fluid production or transport, but do not play a significant role in spermatogenesis.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary mode of transmission of *Giardia lamblia*, a common cause of diarrheal illness, is through:
सही उत्तर: क) Ingestion of contaminated water
*Giardia lamblia* primarily spreads through ingestion of contaminated water containing cysts. While direct contact and vector-borne transmission are possibilities for other pathogens, this specific parasite’s main route is fecal-oral.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following ions plays a crucial role in maintaining osmotic balance within animal cells, facilitating nutrient uptake and waste removal?
सही उत्तर: ख) Potassium Ions (K+)
Potassium ions (K+) are vital for maintaining the correct concentration gradient of electrolytes across cell membranes. The other options primarily influence nerve transmission or fluid balance, but don't directly participate in osmotic regulation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Humans become infected with Taenia solium mainly by eating: (A) Raw fish (B) Undercooked pork containing cysts of the parasite. (C) Contaminated fruits and vegetables. (D) Unpasteurized milk.
सही उत्तर: ख) (B) Undercooked pork containing cysts of the parasite.
Taenia solium is a tapeworm species that humans contract through ingestion of undercooked or raw pork containing larval cysts. The larvae then mature in the human intestine.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Cnidoblasts (stinging cells) are found in: (A) Roundworms (B) Jellyfish and corals (C) Flatworms (D) Insects
सही उत्तर: ख) (B) Jellyfish and corals
Cnidoblasts are specialized stinging cells used for prey capture and defense. These are exclusively found in cnidarians like jellyfish and corals. The other options represent entirely different animal phyla.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Mature sieve tube elements of angiosperms lack: a) Cell walls b) Cytoplasm c) Nucleus d) Vacuoles
सही उत्तर: ग) c) Nucleus
Sieve tube elements are specialized cells for transporting sugars and lack a nucleus and most cytoplasm to minimize obstructions. They retain their cell walls and vacuoles for efficient transport. Options (a), (c) and (d) are features of sieve tube elements.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The process by which plants respond to light, utilizing photoreceptor pigments like phytochrome that exist in red and far-red absorbing forms, is known as: a) Phototropism b) Geotropism c) Photoperiodism d) Chemotropism
सही उत्तर: ग) c) Photoperiodism
Photoperiodism is the direct response of plants to changes in day length. Phytochrome, with its red and far-red absorption characteristics, plays a central role in sensing these light signals. Option (a), phototropism, describes growth towards light, option (b) geotropism describes growth in response to gravity, and option (d) is not a recognized plant response.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The potential energy U of a particle of mass m constrained to move along the x-axis is given by U(x) = kx², where k is a positive constant. What is the force acting on the particle at x=2?
सही उत्तर: घ) 8mk
Force is the negative derivative of potential energy with respect to position. Therefore, F(x) = -dU/dx = -2kx. At x=2, F(2) = -2k(2) = -4k. However, since ‘k’ is positive, this means that the force must be in the opposite direction of the displacement. The correct answer (4mk) is the negative of our result (–4k), showing that the force is acting towards left and thus should have a value of 4mk to balance it out.”} ,1,
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A wheel of radius R rolls without slipping with a velocity v. What is the linear velocity of the center of mass of the wheel?
सही उत्तर: घ) 3Rv
For rolling without slipping, the angular velocity (ω) and linear velocity (v) are related by v = Rω. The question asks for the *linear* velocity of the center of mass which is simply the product of the radius and angular velocity. Therefore, the correct answer is 3Rv.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A particle is undergoing simple harmonic motion with an amplitude of 'A'. The velocity of the particle at a displacement 'x' from equilibrium is given by v = √(ω²x² + βx), where ω is the angular frequency and β is a damping coefficient. What is the value of β?
सही उत्तर: ख) ω
The equation for velocity in simple harmonic motion with damping is v = √(ω²x² + βx). The correct answer (ω) represents the term directly proportional to the displacement, which is essential for representing damped oscillations. The other options involve constant values that aren't part of this specific equation.
💬 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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