TAILIEUCHUNG - Ebook Lippincott's illustrated Q&A review of biochemistry: Part 2

(BQ) Part 2 book "Lippincott's illustrated Q&A review of biochemistry" presents the following contents: Biochemical compounds, protein structure and function; DNA structure, replication and repair; RNA synthesis; protein synthesis, protein synthesis, molecular medicine and techniques, energy metabolism overview,. | Chapter 11 TCACycle and Oxidative Phosphorylation This chapter contains questions on the TCA cycle and oxidative phosphorylation including questions integrated with other aspects of metabolism. Metabolic diseases affecting aspects of the TCA cycle and oxidative phosphorylation are also covered in this chapter. QUESTIONS Select the single best answer. 1 A chronic alcoholic while out on a binge became very confused and forgetful. The police found the man and brought him to the emergency department. Upon examination he displayed nystagmus and ataxia. Which enzyme is displaying reduced activity in his brain under these conditions A Glyceraldehyde-3-phosphate dehydrogenase B Isocitrate dehydrogenase C a-ketoglutarate dehydrogenase D Succinate dehydrogenase E Malate dehydrogenase 2 The energy yield from the complete oxidation of acetyl-CoA to carbon dioxide is which of the following in terms of high-energy bonds formed A 6 B 8 C 10 D 12 E 14 3 Ethanol ingestion is incapable of supplying carbons for gluconeogenesis. This is due to which of the following A Ethanol is converted to acetone and the carbons are lost during exhalation B Ethanol is lost directly in the urine C Ethanol cannot enter the liver where gluconeogenesis predominantly occurs D Ethanol s carbons are lost as carbon dioxide before a gluconeogenic precursor can be generated E Ethanol is converted to lysine which is strictly a ketogenic amino acid 4 A family that had previously had a newborn boy die of a metabolic disease has just given birth to another boy small for gestational age and with low Apgar scores. The child displayed spasms a few hours after birth. Blood analysis indicated extremely high levels of lactic acid. Analysis of cerebrospinal fluid showed elevated lactate and pyruvate. Hyperalaninemia was also observed. The child died within 5 days of birth. The biochemical defect in this child is most likely which of the following A The E1 subunit of pyruvate dehydrogenase B The E2 subunit of pyruvate .

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• Lippincotts illustrated Q&A review of biochemistry
• Biochemical compounds
• Protein structure and function
• RNA synthesis
• Protein synthesis
• DNA structure
• Energy metabolism overview