Biochem Final Exam PollEv Questions 2022 (Solved)

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Biochem Final Exam PollEv Questions 2022 (Solved) What are the main sites for glycogen storage? Can the brain use long fatty acids as fuel? Which of the following will be activated in the liv... er by glucagon? Where is glycogen found in ocular tissues? What binds glucose-1-P to UDP? T/F. Glycogen phosphorylase is activated by insulin what is GSD type I (von Gierke's disease)? Which of the following enzymes related to carbohydrate metabolism is not expressed in the muscle? What are the 3 outcomes of glucose catabolism? Present in the normal human lens, reduced glutathione is : Which of the following will funnel glu-6-p into the PPP? What indicates that rate of anaerobic glycolysis >> TCA? The monosaccharides present in nucleic acids are produced metabolically by the: Electrons are produced in the pentose phosphate shunt. One may say about this that: Which three steps of glycolysis are irreversible, and thus not shared with gluconeogenesis? Which enzyme catalyzes the rate-limiting step in gluconeogenesis? Which gluconeogensis step(s) occur(s) in the mitochondria? Which enzymatic steps of glycolysis occur in the mitochondria? Regulation of glycolysis and gluconeogenesis occur where? T/F. Glucagon activates gluconeogenesis and glycogenolysis in the liver: T/F. Insulin activates glycolysis and glycogen synthesis in skeletal muscle: The following is true about gluconeogenesis: What are the ocular symptoms of Hurler's? Which of the following cell types is insulin-dependent for glucose uptake? What is the polyol pathway? T/F. In uncontrolled diabetes, protein glycosylation will be higher in tissues that depend on insulin for glucose uptake: What are the corneal complications of DM? What causes polyol related cataracts? Which is an important function of the Cori cycle? Which of the following molecules can serve as a precursor for the synthesis of glucose via gluconeogenesis? Functions of lipids include: T/F. Most lipids are transported in the blood associated to lipoproteins: T/F. There is a direct correlation between the "degree of saturation" of a fatty acid and its melting point: {{Ans- True What is true about DHA? Prostaglandins, thromboxanes, and leukotrienes are: What is the biochemical basis of Tay-Sachs? The TCA has as its principal function: TCA occurs where? The electron transport/respiratory chain occurs where in the cell? In how many protein complexes within the ETC the decrease in free energy is sufficient to pump protons across the mitochondrial inner membrane? When electrons flow through redox proteins in the inner mitochondrial membrane: 2,4 dinitrophenol is a chemical agent that increases the permeability of the inner mitochondrial membrane to protons. From the options, which would be the direct effects of this chemical in energy metabolism? How many electrons does 1 molecule of NADH+H+ or FADH2 transfer to the electron transport chain? T/F. ATP generation via substrate-level phosphorylation can occur either in the cytoplasm or in the mitochondria and is independent of the proton-motive force How many molecules of ATP are generated by substrate level phosphorylation during the complete oxidation of 1 molecules of glucose through glycolysis and TCA? Which enzyme of the TCA is embedded in the inner mitochondrial membrane and is also called "complex II" in the ETC? A 50-year old male experiences increased muscle fatigue and deteriorating neurological function. Blood tests revealed abnormally elevated levels of lactic acid and decreased levels of glucose. If successfully delivered to the muscle, which of the following molecules would be able to increase muscle ability to aerobically oxidize glucose and thus alleviate patient symptoms? [Show More]

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