कृषि, पशु र वन विज्ञान B.Sc. Ag र B.V.Sc. & A.H. प्रवेश तयारी
कृषि, पशु र वन विज्ञान – B.Sc. Ag र B.V.Sc. & A.H. प्रवेश
B.Sc. Ag & B.V.Sc. 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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In each cycle, the sodium-potassium pump of an animal cell membrane moves:
सही उत्तर: घ) 3 Na+ out and 2 K+ in
Using one ATP, the Na+/K+ ATPase expels 3 sodium ions and brings in 2 potassium ions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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When a plant cell is placed in a strongly hypertonic solution, the protoplast shrinks away from the cell wall. This is called:
सही उत्तर: घ) Plasmolysis
Water leaves the cell by exosmosis in a hypertonic solution, so the protoplast contracts away from the wall (plasmolysis).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 80S ribosome of a eukaryotic cell is made up of which two subunits?
सही उत्तर: क) 60S and 40S
Eukaryotic 80S ribosomes consist of a large 60S and a small 40S subunit (S values are not additive).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A mesosome, an infolding of the plasma membrane, is found in:
सही उत्तर: क) Bacteria
Mesosomes are membranous extensions seen in bacterial cells, thought to help in respiration, secretion and cell wall formation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Lampbrush chromosomes are typically observed in:
सही उत्तर: क) Oocytes of amphibians
Lampbrush chromosomes are large, loop-bearing chromosomes seen in the diplotene oocytes of amphibians and other vertebrates.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The nucleus of the cell was discovered in 1831 by:
सही उत्तर: घ) Robert Brown
Robert Brown observed and named the nucleus in orchid cells in 1831.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Centrioles are generally absent in the cells of:
सही उत्तर: ग) Higher (flowering) plants
Cells of angiosperms lack centrioles; the spindle forms without them.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Microfilaments of the cytoskeleton are composed mainly of the protein:
सही उत्तर: क) Actin
Microfilaments are thin polymers of actin, whereas microtubules are made of tubulin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Cytoplasmic strands that pass through plant cell walls and connect neighbouring cells are called:
सही उत्तर: क) Plasmodesmata
Plasmodesmata are channels through the cell walls that link the cytoplasm of adjacent plant cells.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The enzyme catalase, which breaks down hydrogen peroxide into water and oxygen, is mainly found in:
सही उत्तर: ख) Peroxisomes
Peroxisomes contain oxidases that produce H2O2 and catalase that decomposes it into water and oxygen.
💬 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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