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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An antibody (immunoglobulin) molecule is made up of:
सही उत्तर: ग) two heavy and two light polypeptide chains
Each antibody has four peptide chains, two heavy and two light, held by disulphide bonds; hence it is written H₂L₂.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The common cold in humans is caused mainly by:
सही उत्तर: घ) rhinoviruses
Rhinoviruses infect the nose and respiratory passages, causing the common cold; they do not infect the lungs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Syphilis, a sexually transmitted infection, is caused by:
सही उत्तर: ग) Treponema pallidum
Syphilis is caused by the spirochaete bacterium Treponema pallidum; Neisseria causes gonorrhoea.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Copper-releasing intrauterine devices such as Copper-T prevent pregnancy mainly because the copper ions:
सही उत्तर: क) suppress sperm motility and fertilising capacity
Cu ions released in the uterus reduce sperm motility and fertilising ability; IUDs also increase phagocytosis of sperm in the uterus.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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During early development, the solid ball of 8–16 blastomeres formed by cleavage of the human zygote is called the:
सही उत्तर: ख) morula
Mitotic cleavage forms a solid mass of 8–16 cells, the morula, which then develops into the hollow blastocyst.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following hormones is produced in a woman only during pregnancy?
सही उत्तर: ग) Human placental lactogen (hPL)
hCG and hPL are made by the placenta only during pregnancy; oestrogen, progesterone and prolactin are also produced in non-pregnant women.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The middle piece of a human sperm contains numerous:
सही उत्तर: ख) mitochondria, which supply energy for movement
Mitochondria in the middle piece produce ATP that powers the beating of the tail.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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One primary spermatocyte, after completing meiosis and spermiogenesis, gives rise to:
सही उत्तर: ग) four spermatozoa
Meiosis of a primary spermatocyte produces four haploid spermatids, each of which differentiates into a sperm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Oxytocin and vasopressin (ADH) are released from the posterior pituitary, but they are actually synthesised in the:
सही उत्तर: क) hypothalamus
Neurosecretory cells of the hypothalamus make these hormones; they travel down axons to the neurohypophysis, which stores and releases them.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Hormones such as adrenaline that cannot enter their target cells bind to membrane receptors and produce their effect through a second messenger such as:
सही उत्तर: क) cyclic AMP (cAMP)
Binding of adrenaline (or glucagon) to its membrane receptor activates adenylate cyclase, raising cAMP, which then triggers the cell's response.
💬 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।
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