Read e-book online One Stop Doc Metabolism & Nutrition PDF

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By Miruna Canagaratnam, David Shaw

ISBN-10: 0340889403

ISBN-13: 9780340889404

A revision booklet within the One cease document revision sequence which covers the major proof for the metabolism and nutrients module within the kind of brief resolution Questions, (clinical instances) a number of selection Questions and prolonged Matching Questions. Illustrated with easy, simply reproduced line diagrams, this ebook will supply all of the important info for examination luck.

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Extra info for One Stop Doc Metabolism & Nutrition

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T F T F T 25. 1 – B, 2 – F, 3 – I, 4 – C, 5 – A 26. F F T F T ONE STOP DOC 22 27. Sources for gluconeogenesis include a. b. c. d. e. Lactate Acetyl CoA Leucine Glycerol Aspartate 28. Gluconeogenesis in the liver is stimulated by increases in a. b. c. d. e. Glucagon Intracellular cAMP Glucocorticoids Intracellular ATP Insulin 29. Which of the following are important bypass reactions in gluconeogenesis? a. b. c. d. e. Carboxylation of pyruvate to oxaloacetate Conversion of fructose 6-phosphate to glucose 6-phosphate Conversion of oxaloacetate to phosphoenolpyruvate Dephosphorylation of fructose 1,6-bisphosphate Dephosphorylation of glucose 6-phosphate ATP, adenosine triphosphate; TAG, triacylglycerol; FA, fatty acids; TCA, tricarboxylic acid; cAMP, cyclic adenosine monophosphate Energy metabolism 23 EXPLANATION: GLUCONEOGENESIS (i) When hepatic glycogen stores are depleted in the early stages of fasting, glucose can be formed from precursors by gluconeogenesis in the liver and also the kidney.

Cholesterol G. Dehydrogenation I. Phosphorylation K. Malonyl CoA M. Dihydroxyacetone phosphate B. D. F. H. J. L. N. Malate-aspartate Phosphoenolpyruvate Glycine Hydrolysis Coenzyme A Glycerol 1,3-Phosphglyceric acid The triglycerides stored in adipose cells are a major energy store. Utilization of lipids in of triglycerides, producing three fatty acid chains and one generating ATP begins with ....... 1 molecule of ....... , which can enter the glycolysis pathway by conversion to ....... The free fatty 2 3 acids are bound to albumin and transported in the blood to their target tissues.

D. e. The amino acid pool contains 100 g amino acids Protein turnover is 300–400 g/day Collagen has a half-life of just days The primary role of dietary protein is as a fuel Proteins rich in sequences containing proline, glutamate, serine and threonine are rapidly degraded 33. Indicate whether the following proteins are turned over in (A) hours, (B) days, (C) weeks 1. 2. 3. 4. 5. Albumin Haemoglobin Collagen Insulin Glucagon 34. True or false? Aminotransferases a. b. c. d. e. Catalyse irreversibly the transfer of an α-amino group to α-ketoglutarate Contain a prosthetic group derived from vitamin B12 Are only present in the mitochondria of cells Act on all amino acids Can be used to monitor for tissue damage ALT, alanine aminotransferase; AST, aspartate aminotransferase Lipid and amino acid metabolism 47 EXPLANATION: PROTEIN TURNOVER The breakdown of amino acids plays an important part in whole body nitrogen metabolism.

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One Stop Doc Metabolism & Nutrition by Miruna Canagaratnam, David Shaw

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