Multiple-choice questions

NBME-Style Case-Based Questions on the regulation of glycolysis with explanations

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Question 1: A 25-year-old man runs a marathon. After 20 miles, his muscle cells are relying heavily on glycolysis for energy production. Which of the following changes is most likely increasing the rate of glycolysis in his muscles? A. Accumulation of alanine B. Decreased availability of glucose C. Decreased oxygen levels D. Increased AMP concentration […]

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Amino Acid Metabolism- Set 2- Multiple-Choice Questions

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Q.1 – A 12-year-old boy develops convulsions. After an Electroencephalogram (EEG), a neurologist determines that the child has epilepsy. He is started on benzodiazepine, which promotes the activity of GABA. GABA is derived from Glutamate by which of the following reactions?A) DeaminationB) DecarboxylationC) DehydrogenationD) HydroxylationE) TransaminationAnswer: B) DecarboxylationExplanation: GABA (gamma-aminobutyric acid) is synthesized from glutamate

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Amino acid Metabolism- Multiple-Choice Questions- Set 1

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Test your understanding of amino acid metabolism with this high-yield multiple-choice question set designed for medical and health science students. Covering key pathways, clinical correlations, and enzyme functions, this Amino Acid MCQ Set 1 is perfect for USMLE, board exams, and biochemistry reviews. Each question includes a detailed explanation to support deep learning and exam readiness.

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Answer to the Question of the week -1

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A 23-year-old bodybuilder visits his physician with complaints of fatigue, depression, insomnia, hair loss, and dry skin. He tells the physician he has been “bulking up” for an upcoming competition, and his meals consist mostly of eight raw eggs along with low-fat milk. The physician suspects biotin deficiency, given the patient’s diet and symptoms. Which

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Translation- Multiple-choice questions

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1. The following are all characteristics of the genetic code except: Universal Degenerate Non-overlapping Ambiguous 2. Which of the following statements is not true concerning the role of Aminoacyl t-RNA synthetases: Charging an aminoacyl t-RNA synthetase (loading) with an amino acid is an energetically favorable reaction. For every amino acid, there are several Aminoacyl t-RNA

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Characteristics of phospholipids

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Q.1- Which one of the following characteristics of phospholipids is correct? A. They always contain choline and glycerol B. They are an important source of energy during fasting C. They are major components of membranes D. They are uncharged at physiological pH E. They are water-insoluble. Details The correct answer is -C. The phospholipids are

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Carbohydrate metabolism-Practice questions

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1) Which of these enzyme reactions is not irreversible in glycolysis? a) Hexokinase b) Glucokinase c) 3-phosphoglycerate kinase d) Phosphofructokinase-1 e) Pyruvate kinase 2) Which of the following statements is not true about aerobic glycolysis? a) The rate-limiting enzyme is phosphofructokinase-1 which converts fructose-6- phosphate to fructose-1,6-bisphosphate b) The pathway is activated allosterically by fructose-2,6-bisphosphate

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