Thiamine Diphosphate Activate The Aldehyde Is Transferred Beriberi

The answer is b. (Murray, pp 627-661. Scriver, pp3127-3164. Sack, pp 121-138. Wilson, pp 287-320.) Ferrous iron (Fe++) is the form absorbed in the intestine by ferritin, transported in plasma by transferrin, and stored in the liver in combination with ferritin or as hemosiderin. There is no known excretory pathway for iron, either in the ferric or ferrous form. For this reason, excessive iron uptake over a period of many years may cause hemochro-matosis (235200), the likely diagnosis for...

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The answer is a. (Murray, pp 48-73. Scriver, pp 4571-4636. Sack, pp 3-17. Wilson, pp 101-120.) The woman would exhibit respiratory acidosis due to shortness of breath and decreased efficiency of gas exchange in the lungs. Emphysema involves dilated and dysfunctional alveoli from alveolar tissue damage, usually secondary to cigarette smoking. The hypoxia leads to tissue deoxygenation and acidosis, exacerbated by the hypercarbia (CO2 accumulation) that distinguishes respiratory acidosis...

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The major source of extracellular cholesterol for human tissues is a. Very-low-density lipoproteins (VLDLs) b. Low-density lipoproteins (LDLs) c. High-density lipoproteins (HDLs) 288. The synthesis of 3-hydroxy-3-methylglutaryl CoA can occur a. Only in mitochondria of all mammalian tissues b. Only in the cytosol of all mammalian tissues c. Only in the endoplasmic reticulum of all mammalian tissues d. In both the cytosol and mitochondria 289. When the liver is actively synthesizing fatty...

Questions

DIRECTIONS Each item below contains a question or incomplete statement followed by suggested responses. Select the one best response to each question. 141. A 72-year-old woman with emphysema presents to the emergency room with fatigue and respiratory distress. Which set of arterial blood gas values below would represent her condition and reflect a shift of the hemoglobin oxygen dissociation curve to the right a. pH 7.05, bicarbonate 15 mM, Pco2 60, Po2 88 b. pH 7.15, bicarbonate 10 mM, Pco2 30,...

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In the urea cycle diagram below, which compound is derived from a condensation of CO2 and NH4+ 245. In the schematic urea cycle diagram in question 244, which compound is considered the end product 246. The reactions of the urea cycle occur c. In the mitochondrial matrix and the cytosol 247. A newborn becomes progressively lethargic after feeding and increases his respiratory rate. He becomes virtually comatose, responding only to painful stimuli, and exhibits mild respiratory alkalosis....

Which Glycosidic Cherubic Facies

Which of the following explains why individuals with hyperlipi-demia and or gout should minimize their intake of sucrose and high-fructose syrups a. Fructose is initially phosphorylated by liver fructokinase b. After initial modification, fructose is cleaved by a specific enolase c. Fructose is converted to UDP-fructose d. Fructose is ultimately converted to galactose e. Fructose can be phosphorylated by hexokinase in adipose cells 185. Glycogen synthetase, the enzyme involved in the...

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Which of the following amino acids is most compatible with an a-helical structure 110. Blood is drawn from a child with severe anemia and the hemoglobin protein is degraded for peptide and amino acid analysis. Of the results below, which change in hemoglobin primary structure is most likely to correlate with the clinical phenotype of anemia 111. An adult with mild, chronic anemia does not respond to iron supplementation. Blood is drawn and the red cell hemoglobin is analyzed. Which of the...

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Autosomal recessive conditions are correctly characterized by which of the following statements a. They are often associated with deficient enzyme activity b. Both alleles contain the same mutation c. They are more variable than autosomal dominant conditions d. Most persons do not carry any abnormal recessive genes e. Affected individuals are likely to have affected offspring 402. Gardner's syndrome is an autosomal dominant condition characterized by multiple polyps of the intestines, bony...

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Which one of the following enzymes requires a coenzyme derived from the vitamin whose structure is shown below d. Glucose-6-phosphate dehydrogenase 319. Coenzymes derived from the vitamin shown below are required by enzymes involved in the synthesis of which of the following 320. Coenzymes derived from the vitamin shown below are required by which one of the following enzymes e. Glyceraldehyde-3-phosphate dehydrogenase 321. Which of the structures in the figure below is involved in amino...