आधारभूत विज्ञान (Anatomy, Physiology, Biochemistry) – Basic Sciences MCQ
आधारभूत विज्ञान (Anatomy, Physiology, Biochemistry) – MD/MS प्रवेश
Basic Sciences · MECEE-PG – MD/MS/MDS Entrance · ४३३ प्रश्न
४३३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
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
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Which anatomical structure is most commonly associated with the formation of the inguinal ligament?
सही उत्तर: ग) The rectus abdominis muscle
Option 2 is correct. The rectus abdominis muscle's fibers converge at the anterior midline to form the inguinal ligament (also known as the abdominal wall), a key component of the inguinal triangle.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the primary function of the hormone insulin?
सही उत्तर: ग) To facilitate glucose uptake into cells.
Option 2 is correct. Insulin's main action is to lower blood glucose levels by promoting the transport of glucose from the bloodstream into various cells for energy utilization. Options 1 and 3 describe opposite effects, while option 4 refers to a different hormone.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following enzymes is predominantly found in the mitochondria and plays a vital role in oxidative phosphorylation?
सही उत्तर: घ) Ribonuclease
Option 3 is correct – ATP synthase catalyzes the final step in oxidative phosphorylation, generating ATP from ADP and phosphate. The other enzymes have distinct locations and functions within cells (DNA replication, carbohydrate digestion, protein degradation).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements regarding aldosterone's action is MOST accurate?
सही उत्तर: क) Aldosterone increases sodium reabsorption in the distal tubule and collecting duct of the kidney.
Option 0 is correct because aldosterone plays a crucial role in regulating electrolyte balance by increasing sodium reabsorption and water retention in the nephron tubules. The other options describe incorrect mechanisms of action related to aldosterone or other hormones.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the primary role of microtubules within a neuron during an action potential?
सही उत्तर: घ) Mediating the depolarization and repolarization phases of the action potential
Microtubules contribute to the ‘action potential propagation’ by providing a track for ion channel movement. They are essential for the rapid, directional changes in membrane potential during an action potential; the other options refer to roles of other cellular components.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Concerning the role of collagen in connective tissue, which statement is most accurate?
सही उत्तर: क) It primarily provides tensile strength, resisting stretching forces
Collagen’s primary function is to provide tensile strength, enabling tissues to withstand pulling or stretching forces. Cartilage utilizes other structural proteins like proteoglycans. Bone contains collagen but in a different ratio.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following processes is *most* directly responsible for the regulation of blood pressure by the sympathetic nervous system?
सही उत्तर: क) Release of insulin from the pancreas
The sympathetic nervous system’s primary influence on blood pressure is through vasoconstriction (narrowing of blood vessels), increasing resistance and thus elevating BP. Insulin, baroreceptor activation, and atrial natriuretic peptide have other roles in cardiovascular regulation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of the intercalated cells within the nephron is to:
सही उत्तर: ग) Generate a concentration gradient in the medulla for water reabsorption
Intercalated cells have specialized transport proteins that enable them to actively secrete ions (K+, H+) and contribute to the countercurrent multiplier system, crucial for concentrating urine. Reabsorption and generating concentration gradients are primarily the functions of other nephron cell types.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following correctly describes the primary function of aldosterone?
सही उत्तर: ख) Maintaining electrolyte balance, particularly sodium and potassium
Aldosterone, produced by the adrenal cortex, plays a crucial role in regulating sodium reabsorption and potassium excretion from the kidneys, maintaining fluid balance and blood pressure. The other options describe functions of hormones like insulin, hydrochloric acid, and epinephrine respectively.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient presents with elevated blood levels of creatine kinase (CK). Which of the following conditions is MOST likely? (a) Hypothyroidism (b) Myocardial infarction (c) Addison's disease (d) Cushing’s syndrome
सही उत्तर: ख) (b) Myocardial infarction
Elevated CK levels are commonly associated with muscle damage, such as that caused by a heart attack (myocardial infarction). Options (a), (c), and (d) represent endocrine disorders.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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