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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The wings of a bird and the wings of an insect are examples of:
सही उत्तर: घ) Analogous organs
Analogous organs perform similar functions but differ in origin and structure, showing convergent evolution. Homologous organs, like a bat's wing and human arm, share origin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The theory of 'inheritance of acquired characters' was proposed by:
सही उत्तर: ग) Lamarck
Lamarck proposed that characters acquired through use and disuse are passed to offspring. Weismann's germ plasm theory argued against it.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Down's syndrome is caused by:
सही उत्तर: ख) Trisomy of chromosome 21
Down's syndrome results from an extra copy of chromosome 21 (47 chromosomes). Monosomy X (45, XO) causes Turner's syndrome and XXY causes Klinefelter's syndrome.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Haemophilia is a sex-linked disorder. If a normal man marries a carrier woman, what proportion of their sons are expected to be haemophilic?
सही उत्तर: क) 50%
Sons receive their X from the mother; half receive the mutant X from a carrier mother (XhX). Daughters receive the father's normal X, so none are affected, though half are carriers.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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HIV primarily infects and destroys:
सही उत्तर: घ) Helper T lymphocytes (CD4 cells)
HIV attaches to the CD4 receptor on helper T cells and macrophages, gradually reducing the CD4 count and causing immunodeficiency. B cells are affected only indirectly.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The antibody involved in allergic reactions is:
सही उत्तर: ग) IgE
IgE binds mast cells and basophils, triggering histamine release in allergy. IgM is the first antibody produced in a primary immune response.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which immunoglobulin can cross the placenta?
सही उत्तर: ख) IgG
IgG is the only antibody that crosses the placenta, giving the newborn passive immunity. IgA is the main antibody in colostrum and secretions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The heart and blood vessels develop from which germ layer?
सही उत्तर: क) Mesoderm
The circulatory system, muscles, bones and kidneys arise from mesoderm. The nervous system and epidermis develop from ectoderm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The type of cleavage seen in the human zygote is:
सही उत्तर: घ) Holoblastic
The human egg is alecithal (very little yolk), so the whole zygote divides (holoblastic cleavage). Meroblastic discoidal cleavage occurs in yolky eggs of birds and reptiles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The hormone detected in a pregnancy test is:
सही उत्तर: ग) Human chorionic gonadotropin (hCG)
hCG is secreted by the trophoblast/placenta soon after implantation and appears in urine. It maintains the corpus luteum in early pregnancy.
💬 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।