आधारभूत विज्ञान (Anatomy, Physiology, Biochemistry) – Basic Sciences MCQ

आधारभूत विज्ञान (Anatomy, Physiology, Biochemistry): प्रश्न र उत्तर

सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।

सही: ० / ०

191. Which of the following metabolic pathways is *directly* catalyzed by phosphofructokinase (PFK)?

     कThe citric acid cycle. खGlycolysis. गBeta-oxidation of fatty acids. घAmino acid synthesis.
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192. Which of the following statements accurately reflects the role of collagen in connective tissue?

     कIt provides structural support primarily through tensile strength. खIt facilitates rapid glucose absorption from the small intestine. गIt directly controls muscle contraction via calcium signaling. घIt catalyzes the breakdown of complex carbohydrates into simpler sugars.
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193. A patient presents with muscle weakness, particularly affecting the eye muscles, alongside symptoms of confusion and ataxia. Which electrolyte imbalance would MOST likely explain this clinical presentation?

     कHypercalcemia खHypokalemia गHypomagnesemia घHyponatremia
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194. The process of oxidative phosphorylation primarily occurs in which cellular compartment?

     कRibosomes खGolgi Apparatus गMitochondria घEndoplasmic Reticulum
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195. Which of the following findings would MOST strongly suggest an increased risk of developing Type 2 Diabetes Mellitus?

     कElevated serum cortisol levels खIncreased fasting blood glucose levels गReduced glomerular filtration rate घDecreased resting heart rate
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196. What is the primary function of hemoglobin in red blood cells?

     कA. Transporting oxygen from the lungs to tissues throughout the body. खB. Regulating blood pressure within arterial vessels. गC. Facilitating platelet aggregation for wound healing. घD. Producing hormones that control metabolic rate.
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197. A patient presents with severe muscle weakness affecting proximal muscles disproportionately. Blood tests reveal elevated creatine kinase (CK) levels. Which of the following biochemical abnormalities is MOST likely associated with this presentation?

     कA. Increased activity of glycogen phosphorylase. खB. Deficiency in acetylcholine receptors. गC. Mitochondrial dysfunction and impaired oxidative phosphorylation. घD. Excessive production of adenosine triphosphate (ATP).
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198. Which cellular component is most directly involved in the process of oxidative phosphorylation?

     कA. Ribosomes खB. Mitochondria गC. Endoplasmic Reticulum घD. Golgi Apparatus
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199. The primary role of the hormone aldosterone in maintaining homeostasis is:

     कA. Increasing sodium excretion by the kidneys. खB. Promoting water retention by the body. गC. Stimulating the reabsorption of sodium and water by the kidneys. घD. Decreasing blood volume through direct vasodilation.
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200. Which of the following statements accurately describes the primary function of amylase in the human body?

     कA. Catalyzing the breakdown of triglycerides into fatty acids and glycerol. खB. Facilitating the conversion of glucose to glycogen. गC. Hydrolyzing carbohydrates like starch into simpler sugars such as maltose. घD. Regulating blood calcium levels through the activation of osteoblasts.
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