Tagged: Glucose

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Case study- Starvation

Case details A 25 –year-old woman living alone became severely depressed after the termination of her engagement. Two months later, she was brought to the emergency room by a friend because of weakness and lethargy. She appeared thin and pale. Questioning revealed that she had not eaten for several weeks. Analysis of a plasma sample indicated elevated levels of acetoacetate, β hydroxybutyrate, and blood urea nitrogen (BUN). However her plasma glucose concentration was within normal limits. She was hospitalized, given intravenous feeding and antidepressant medications and subsequently shifted to an 1800 Cal (7500 kJ) diet. Her recovery was uneventful. During...

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Case study- Lactose intolerance

QUESTION OF THE DAY A 30- year-old Asian male presents with bloating, abdominal cramps, and diarrhea. He states that he develops these symptoms whenever he drinks milk or eat dairy products. He is diagnosed with lactose intolerance, a common condition in which lactose is not digested normally and accumulates in the gut. Lactase converts lactose into : A. Two glucose molecules B. Glucose and Fructose C. Glucose and Galactose D. Fructose and Galactose E. Sucrose and Maltose For answer- follow the link http://usmle.biochemistryformedics.com/answer-case-study-lactose-intolerance/   Please help Biochemistry for Medics by “CLICKING ON THE ADVERTISEMENTS” every time you visit us. Thank...

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Case study- Enzymology- A teenager finishes eating a hot fudge sundae and a milk shake…

ENZYMOLOGY A teenager finishes eating a hot fudge sundae and a milk shake. As her blood sugar rises, the liver recruits both Glucokinase (km = 10.0m M) and Hexokinase (km = 0.10mM) to metabolize the glucose. Which of the following is a correct statement about the kinetics of these two enzymes? A. Hexokinase will metabolize 100 times more glucose molecules B. Hexokinase will lower the energy of activation more than glucokinase C. Hexokinase has a much higher affinity to glucose than glucokinase D. Hexokinase will have a higher Vmax than glucokinase E. Hexokinase will be induced more than glucokinase by...

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