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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An enzyme's non-protein organic cofactor that is loosely attached is called a:
सही उत्तर: घ) Coenzyme
Coenzymes are loosely bound organic cofactors (e.g. NAD+); tightly bound ones are prosthetic groups.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which nitrogenous base is found in RNA but not in DNA?
सही उत्तर: क) Uracil
RNA contains uracil in place of thymine.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Cellulose is a polymer of:
सही उत्तर: ख) β-D-glucose
Cellulose consists of β-D-glucose units linked by β-1,4 glycosidic bonds.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a reducing disaccharide?
सही उत्तर: ग) Maltose
Maltose has a free anomeric carbon and is reducing; sucrose is non-reducing because both anomeric carbons are in the glycosidic bond.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The bond linking two amino acids in a protein is the:
सही उत्तर: ख) Peptide bond
Amino acids are joined by peptide (amide) bonds formed between the carboxyl group of one and the amino group of the next.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Colchicine is used to induce polyploidy because it:
सही उत्तर: घ) Inhibits spindle fibre formation
Colchicine prevents spindle formation, so chromosomes duplicate but do not separate, doubling the chromosome number.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If a diploid cell has 2n = 24 chromosomes, how many chromosomes will each cell have at the end of meiosis I?
सही उत्तर: घ) 12
Meiosis I is reductional: homologues separate, so each daughter cell has n = 12 chromosomes (each with two chromatids).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In which phase of the cell cycle does DNA replication take place?
सही उत्तर: ग) S phase
DNA is synthesized (replicated) in the S (synthesis) phase of interphase.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Synapsis (pairing of homologous chromosomes) begins in which sub-stage of prophase I?
सही उत्तर: ख) Zygotene
Homologous chromosomes pair to form the synaptonemal complex during zygotene.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Crossing over between homologous chromosomes occurs during which stage of prophase I?
सही उत्तर: क) Pachytene
Crossing over takes place at pachytene, when bivalents are fully formed; chiasmata become visible at diplotene.
💬 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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