Q.1- A dietary deficiency of iodine would do which of the following? a) Directly affect the synthesis of Thyroglobulin b) Result in increased secretion of Thyroid stimulating hormone (TSH) c) Result in decreased production of Thyrotropin-releasing hormone d) Result in increased basal metabolic rate e) Raise the blood pressure and heart rate Q.2- Which of […]
Hormones-Multiple-choice questions Read More »
1) A 4-month-old boy is being evaluated for seizures, psychomotor retardation, and hypotonia. Workup reveals elevated serum levels of lactate, alanine, pyruvate, and keto acids. Based on the clinical presentation, pyruvate carboxylase activity is measured using fibroblasts from a skin biopsy and is found to be markedly decreased. This enzyme is normally used to directly
Gluconeogenesis- Multiple-choice questions Read More »
1). A patient has chronic obstructive pulmonary disease, and enough oxygen is not reaching her tissues. All of the following are expected except- a) The electron transport chain would be inhibited b) Glycolysis would be activated by a low ATP/ADP ratio c) More than normal amounts of ATP would be synthesized. d) Concentrations of NADH and
Glycolysis- Multiple-choice questions (set-1) Read More »
Q.1- A critical enzyme used directly in the synthesis of dTMP (thymidine) is a) Carbamoyl phosphate b) Aspartate Transcarbamylase c) Dihydrooratase d) Thymidylate synthase Q.2- In which phase of the cell cycle does DNA replication occur? a) G0 b) G1 c) S d) G2 Q.3-A 10-month-old baby boy presents with steatorrhea, recurrent pulmonary infections, GI
Molecular Biology- Multiple-choice questions (set-1) Read More »
1. Which of the following are the ketone bodies? a) Acetyl CoA and Propionyl CoA b) Lecithin and Lysolecithin c) Acetoacetate and Beta-hydroxybutyrate d) Pyruvate and lactate e) Succinyl CoA and succinate 2. The enzyme ‘Thiolase’ catalyzes the conversion of: a) 2 Acetyl CoA to Acetoacetyl CoA b) Acetyl CoA to Malonyl CoA c) Fatty
Lipids- Multiple-choice questions-set-3 Read More »
Q.1- Glucose can be converted to glycerol-3-P through which of the following intermediates? a) Glycerol b) Dihydroxyacetone phosphate c) Acetyl CoA d) Pyruvate e) Malate. Q.2- Which of the following supplies the 2 carbon units that are added to the elongation of the fatty acid chain? a) Acetyl CoA b) Malonyl CoA c) β- Keto
Fatty Acid Metabolism- Multiple-Choice Questions (Solved)-set-4 Read More »
1)- Cholesterol is a precursor of all of the following except- a) Taurocholate b) Glycocholate c) Calcitriol d) Corticosteroids e) Calcitonin. 2)- All 27 carbon atoms of cholesterol are derived from- a) Acetyl CoA b) Acetoacetyl CoA c) Propionyl CoA d) Succinyl CoA e) Malonyl CoA 3)- Cytosolic 3-hydroxy-3-methylglutaryl CoA (HMG CoA) is reduced to
Cholesterol-chemistry and metabolism- Multiple-choice questions Read More »
Q.1 – A gall stone that blocked the upper part of the bile duct would cause an increase in which of the following? a) The excretion of fats in the feces b) Formation of chylomicrons c) Excretion of bile salts d) Conjugation of bile acids e) Recycling of bile salts Q.2- An 8-year-old boy presents
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Q.1- A 73-year-old woman is transferred to an intensive care unit after she is found to be in septic shock. It is believed that she originally had a urinary tract infection and that the bacteria seeded her bloodstream. The critical care fellow is concerned she may not have an adequate stress response in this situation.
Practice questions-set-1 Read More »
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 her seizures. She is pregnant and
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