USMLE Styled Question Bank | Our Biochemistry- Namrata Chhabra

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

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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Glycolysis -Self-assessment

Practice questions, Quick Revision Series, USMLE styled question bank / Namrata Chhabra

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Amino Acid Metabolism- Set 2- Multiple Choice Questions

Practice questions, USMLE styled question bank / Namrata Chhabra

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) Deamination B) Decarboxylation C) Dehydrogenation D) Hydroxylation E) Transamination Answer: B) Decarboxylation Explanation:

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Amino acid Metabolism- Multiple-Choice Questions- Set 1

Practice questions, USMLE styled question bank / Namrata Chhabra

Q.1 – Which of the following is a common compound shared by the TCA and Urea cycles? A) α-Ketoglutarate B) Succinyl-CoA C) Oxaloacetate D) Fumarate Answer: D) Fumarate Explanation: Fumarate is a common compound in both the TCA (Tricarboxylic Acid) and urea cycles. In the TCA cycle, fumarate is formed from succinate by the enzyme

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Enzymology Revision (Multiple Choice Questions With Complete Explanations)

Learning resources, Quick Revision Series, QUIZZES, USMLE styled question bank / Namrata Chhabra

Q.1: Glycogen phosphorylase, which mobilizes glycogen for energy, requires which of the following as a cofactor? Adenosyl Cobalamine Coenzyme A Pyridoxal phosphate Tetrahydrofolate Thiamine pyrophosphate Correct Answer: C) Pyridoxal phosphate Explanation: Glycogen phosphorylase is instrumental in the process of glycogenolysis, where it facilitates the breakdown of glycogen into glucose-1-phosphate, thereby playing a vital role in

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Enzyme inhibition

Question of the Week, USMLE styled question bank / Namrata Chhabra

A 54- year-old man complains of an acute onset of unilateral eye pain and reduction in visual acuity. Conjunctival injection (eye redness) and a mild-dilated and non-reactive pupil are observed on physical examination. Fundoscopic examination reveals cupping of the optic disc. Recognizing the signs and symptoms of glaucoma, Acetazolamide is administered to decrease the production

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Biochemistry-Practice Questions (Problem-based multiple choice questions)

All, Practice questions, USMLE styled question bank / Namrata Chhabra

Biochemistry-Practice Questions (Problem-based multiple choice questions) 1)- Several complexes in the electron transport chain contain non-heme iron. The iron in these complexes is bound tightly to which of the following amino acids? a) Serine b) Tyrosine c) Cysteine d) Methionine e) Glutamine 2)- A 27 –year-old female with epilepsy has been taking Phenytoin to control

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Nonessential in normal health but essential amino acid under conditions of enhanced growth or surgical recovery

USMLE styled question bank / Namrata Chhabra

Case details An 8-year-old child requires surgical intervention and substantial recovery time in the hospital. Therefore, a nutritionist recommends a specific dietary plan. The plan includes a protein-rich diet with the special supplementation of an amino acid that is typically considered nonessential but becomes an essential amino acid under enhanced growth or surgical recovery conditions.

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Starvation induced metabolic alterations

USMLE styled question bank / Namrata Chhabra

A 23 –year- old female was brought for consultation by her mother, who was troubled by her daughter’s continuous fatigue, dizziness, and loss of weight. The patient was 6 feet 2 inches tall and weighed 100 pounds. Further questioning revealed that the young woman had been virtually fasting for four months, hoping to obtain a

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ATP- The energy currency within the cell

USMLE styled question bank / Namrata Chhabra

Q.- Adenosine triphosphate (ATP) is the energy currency within the cell. Which of the following best describes the type of compound ATP is? A. Phospholipid B. Amino acid C. Nucleotide D. Triacylglycerol E. Oligosaccharide. Details The correct answer is -C- Nucleotide. The nucleotide coenzyme adenosine triphosphate (ATP) is the most important form of chemical energy

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