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

221. Calcitonin hormone is produced by which endocrine gland?

     कThyroid Gland खParathyroid Glands गAdrenal Cortex घPancreas
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

222. Brunner's glands, characterized by their prominent location in the submucosa of the stomach, are primarily involved in what digestive function?

     कSecretion of hydrochloric acid खProduction of mucus for lubrication गSynthesis of intrinsic factor घStorage of gastric secretions
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

223. Within the pyruvate dehydrogenase complex, which enzyme acts as a coenzyme and is directly involved in linking the decarboxylation of pyruvate to its entry into the citric acid cycle?

     कThiamine pyrophosphate (TPP) खNicotinamide adenine dinucleotide (NAD+) गLipoamide घDihydrolipoyl transacetylase
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

224. Methylmalonic aciduria typically arises due to a deficiency in vitamin B12. This deficiency prevents the proper conversion of methylmalonyl-CoA back to succinyl-CoA, leading to its accumulation and subsequent toxic effects. What is the primary role of vitamin B12 in this process?

     कConversion of tryptophan to niacinamide खActivation of folate cofactor गCoenzyme for converting methylmalonyl CoA to succinyl CoA घRegulation of homocysteine metabolism
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

225. Which enzyme plays a crucial role in converting glucose-6-phosphate into fructose-6-phosphate, representing an early step in glycolysis?

     कA. Phosphofructokinase खB. Hexokinase गC. Aldolase घD. Glucokinase
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

226. The process of peristalsis in the digestive tract relies primarily on which physiological mechanism?

     कA. Active muscle contraction driven by nervous stimulation खB. Passive pressure changes within the intestinal lumen गC. Relaxation of smooth muscles to facilitate food passage घD. Sequential contractions and relaxations of circular and longitudinal smooth muscles
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

227. Which of the following statements accurately reflects the role of mitochondria in cellular metabolism?

     कA. Primarily involved in protein synthesis and folding खB. Responsible for converting light energy into chemical energy गC. The site of ATP production through oxidative phosphorylation घD. Mainly involved in lipid storage and breakdown
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

228. The term ‘glomerular filtration rate’ (GFR) is most closely related to which of the following physiological processes?

     कA. Regulation of blood glucose levels by insulin खB. Filtration of water and small solutes from Bowman's capsule into Bowman's space गC. Synthesis of red blood cells in the bone marrow घD. Conversion of angiotensinogen to angiotensin I
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

229. Which of the following best describes the primary function of erythrocytes within the circulatory system?

     कA. Facilitating oxygen transport throughout the body खB. Regulating blood pressure and coagulation गC. Maintaining electrolyte balance and pH levels घD. Providing immune defense against pathogens
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

230. The primary function of erythrocytes (red blood cells) is to transport which substance throughout the circulatory system?

     कOxygen खCarbon Dioxide गGlucose घWater
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।