जीव विज्ञान – Zoology – Zoology MCQ
जीव विज्ञान – Zoology – CEE प्रवेश
Zoology · Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · ४०८ प्रश्न
४०८ प्रश्न उपलब्ध। मोड छान्नुहोस्:
जीव विज्ञान – Zoology: 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 presence of glucose (glycosuria) and ketone bodies (ketonuria) in urine indicates:
सही उत्तर: घ) diabetes mellitus
In uncontrolled diabetes mellitus, high blood glucose spills into the urine and fat breakdown produces ketone bodies.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A healthy adult human excretes on average about how much urine per day?
सही उत्तर: ख) 1 to 1.5 litres
About 180 L of filtrate is formed daily, but nearly 99% is reabsorbed, leaving about 1–1.5 L of urine.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The counter-current mechanism that helps the human kidney produce concentrated urine involves the:
सही उत्तर: क) loop of Henle and vasa recta
Opposite flows in the two limbs of Henle's loop and in the vasa recta build up an increasing osmotic gradient in the medulla.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Animals such as most bony fishes, which excrete nitrogenous waste mainly as ammonia, are called:
सही उत्तर: ग) ammonotelic
Ammonia is highly toxic but very soluble, so it is excreted by aquatic animals such as bony fishes and tadpoles that have plenty of water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Atherosclerosis, a common cause of coronary artery disease, is due to:
सही उत्तर: ख) deposition of cholesterol, fat and calcium that narrows the arteries
Fatty deposits (plaques) of cholesterol, fat, calcium and fibrous tissue build up in the arterial wall, narrowing the lumen and reducing blood flow to the heart muscle.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a normal adult, lymphocytes make up about what percentage of the total white blood cells?
सही उत्तर: ग) 20–25%
Typical differential count: neutrophils 60–65%, lymphocytes 20–25%, monocytes 6–8%, eosinophils 2–3%, basophils 0.5–1%.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The white blood cells whose number typically rises in allergic reactions and in infections by parasitic worms are the:
सही उत्तर: ग) eosinophils
Eosinophils (normally about 2–3% of WBCs) resist infections by helminths and are associated with allergic reactions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The plasma of a person with blood group A contains:
सही उत्तर: ख) anti-B antibodies
Group A individuals have antigen A on their RBCs and naturally occurring anti-B antibodies in their plasma.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Mature red blood cells of most mammals, including humans, differ from those of frogs and birds in that they:
सही उत्तर: ग) lack a nucleus
Mammalian RBCs lose the nucleus (and most organelles) during maturation, becoming biconcave and enucleate, which leaves more room for haemoglobin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a normal electrocardiogram (ECG), the P wave represents:
सही उत्तर: ग) depolarisation of the atria
The P wave is produced by atrial depolarisation, which leads to atrial contraction; the T wave represents ventricular repolarisation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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