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

211. A fracture of the medial epicondyle of the humerus most commonly injures the flexor carpi ulnaris muscle. This muscle originates from the medial epicondyle and is frequently stressed during wrist flexion.

     कExtensor Carpi Ulnaris खBrachioradialis गPronator Teres घFlexor Digitorum Superficialis
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

212. The rate-limiting enzyme in haem synthesis is δ-aminolevulinic acid dehydratase (δ-ALA-DH). This enzyme catalyzes the crucial step converting α-amino levulinic acid to porphobilinogen.

     कFerrous Iron Uptake खGlutamate Synthase गUroporphyrinogen Decarboxylase घHydroxymethylbilane Synthesis
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

213. The artery palpable in the anatomical snuffbox is the radial artery. This artery passes through the snuffbox and is a common landmark for palpation.

     कUlnar Artery खBrachial Artery गFemoral Artery घAxillary Artery
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

214. The muscle that ‘unlocks’ or extends the knee joint is the quadriceps femoris. Its contraction directly causes the femur to straighten at the stifle (knee). The other muscles are involved in movement but don't control this particular extension.

     कHamstrings खGastrocnemius गSoleus घGluteus Maximus
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

215. The description indicates kinky hair, neurodegeneration, low serum copper, and low caeruloplasmin. These findings strongly point towards Wilson’s Disease, a genetic disorder characterized by the accumulation of copper in various tissues due to impaired copper transport.

     कFanconi Anemia खMenkes Disease गWilson's Disease घMaple Syrup Urine Disease
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

216. On a Lineweaver-Burk plot, the y-axis intercept represents the Michaelis constant (Km) of the enzyme. This value reflects the substrate concentration at which the reaction rate is half its maximum velocity (Vmax). The x-intercept relates to Vmax.

     कKm खVmax गEnzyme Concentration घSubstrate Concentration
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

217. Residual volume is the volume of air remaining in the lungs after a maximal exhalation, which cannot be accurately measured by simple spirometry. The other listed volumes (tidal volume, expiratory reserve volume, and inspiratory reserve volume) can all be directly assessed using spirometric techniques.

     कTidal Volume खExpiratory Reserve Volume गInspiratory Reserve Volume घResidual Volume
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

218. In protein synthesis, stop codons (UAA, UAG, UGA) signal the termination of translation by initiating the release of the polypeptide chain. The other options represent codons that continue to add amino acids to the growing polypeptide strand.

     कStart codon खRibosomal binding site गInitiation codon घProline codon
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

219. Methylmalonic aciduria primarily indicates a deficiency of Vitamin B12. This condition arises because B12 is essential for the conversion of methylmalonyl CoA to succinyl CoA, a critical step in fatty acid metabolism and neurotransmitter synthesis. A lack of B12 results in an accumulation of unmetabolized methylmalonic acid, causing symptoms associated with this disorder. The other options present alternative metabolic deficiencies or unrelated physiological processes.

     कVitamin C खVitamin D गVitamin A घVitamin B9
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

220. The liver's inability to efficiently utilize ketone bodies is largely due to its deficiency in which enzyme?

     कPyruvate carboxylase खAcetyl CoA carboxy ligase गβ-hydroxybutyryl dehydrogenase घCitrate synthase
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।