Тест 1
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Питання №: 49A young girl with a history of severe abdominal pain was taken to her local hospital at 5 a.m. in severe distress. Blood was drawn, and the plasma appeared milky, with the triacylglycerols level in excess of 2000 (normal = 4-150 mg/dl). The patient was placed on a diet severely limited in fat, but supplemented with medium-chain length fatty acids. Which of the following lipoprotein particles are most likely responsible for the milky appearance of the patient's plasma? Chylomicrons Very-low-density lipoproteins Intermediate-density lipoproteins Low density-lipoproteins High density-lipoproteins Питання №: 50You need to degrade DNA. What enzyme will you use? Proteinase Oxidase Nuclease Lipase Transferase Питання №: 51Optimal conditions for the determination of the enzyme activity in the blood are: 5oC pH 73 high concentration of substrates 20oC pH 65 low concentration of substrates 40oC pH 73 high concentration of substrates 50oC pH 58 low concentration of substrates 70oC pH 78 high concentration of substrates Питання №: 52How many is P/O ratio when the FAD-containing dehydrogenase catalyzes the oxidation of succinate? 1 2 3 4 5 Питання №: 53In human saliva there is an enzyme able to hydrolyze the alpha-1,4-glucosidic bonds in the molecule of starch. Name this enzyme: alpha-Amylase Phosphatase Fructofuranosidase beta-Galactosidase Lysozyme Питання №: 54In a human body chymotrypsin is produced by the pancreas as the inactive precursor called chymotrypsinogen. What intestinal lumen enzyme leads to the transforming of chymotrypsinogen into the catalytically active enzyme molecule? Aminopeptidase Enterokinase Pepsin Trypsin Carboxypeptidase Питання №: 55Which is the mechanism of glucose absorption? Secondary active transport Primary active transport Simple diffusion Facilitated diffusion Pinocytosis |