कृषि, पशु र वन विज्ञान B.Sc. Forestry प्रवेश तयारी
कृषि, पशु र वन विज्ञान – B.Sc. Forestry प्रवेश
B.Sc. Forestry Entrance · Agriculture, Veterinary & Forestry Entrance
२,४९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कृषि, पशु र वन विज्ञान 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 restriction enzyme EcoRI recognises and cuts the palindromic sequence:
सही उत्तर: क) 5'-GAATTC-3'
EcoRI cuts between G and A in GAATTC, leaving sticky ends; GGATCC is BamHI and AAGCTT is HindIII.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Prions, which cause diseases such as mad cow disease (BSE), are infectious agents made of:
सही उत्तर: ग) Abnormally folded protein only
Prions are misfolded proteins without nucleic acid; they induce normal proteins to misfold.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Cyclosporin A, used as an immunosuppressant in organ transplant patients, is obtained from the fungus:
सही उत्तर: घ) Trichoderma polysporum
Cyclosporin A is produced by Trichoderma polysporum; statins come from Monascus purpureus.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Citric acid is produced commercially by fermentation using the fungus:
सही उत्तर: क) Aspergillus niger
Aspergillus niger is the industrial organism for citric acid production.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Large holes in Swiss cheese are produced by carbon dioxide released by the bacterium:
सही उत्तर: ख) Propionibacterium shermanii
Propionibacterium shermanii produces large amounts of CO2 during ripening, forming the characteristic holes in Swiss cheese.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Interferons, which protect neighbouring cells from viral infection, are glycoproteins produced by:
सही उत्तर: घ) Virus-infected cells
Virus-infected host cells secrete interferons that make uninfected neighbouring cells resistant to viral multiplication.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary lymphoid organs, where lymphocytes originate and mature, are:
सही उत्तर: ग) Bone marrow and thymus
Lymphocytes arise in the bone marrow; B cells mature there and T cells mature in the thymus.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Allergic reactions such as hay fever involve mainly which class of antibody?
सही उत्तर: ख) IgE
IgE binds to mast cells and basophils; on contact with an allergen these cells release histamine, causing allergy symptoms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Kala-azar (visceral leishmaniasis) is transmitted by the:
सही उत्तर: घ) Sandfly (Phlebotomus)
Leishmania donovani, the cause of kala-azar, is spread by the bite of the sandfly Phlebotomus.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Filariasis (elephantiasis) is caused by Wuchereria bancrofti and transmitted by the bite of:
सही उत्तर: क) Female Culex mosquito
Wuchereria is transmitted by female Culex mosquitoes; the worms block lymphatic vessels, causing swelling of limbs.
💬 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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