Тест 1
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Питання №: 37A newborn child has dark coloring of sclera’s and mucous membranes. The excreted urine darkens in the air. Laboratory tests of blood and urine have revealed the occurrence of homogentisic acid. What can the cause of this state be? Cystinuria Albinism Galactosemia Alcaptonuria Histidinemia Питання №: 38Which enzyme takes part in gastric digestion of carbohydrates: Oligo-l,6-glycosidase Amylo-l,6-glycosidase Salivary amylase There's no any enzyme for carbohydrates digestion in stomach Sucrase Питання №: 39A 1-year-old baby has been hospitalized for body and limbs lesions. Examination revealed carnitine deficiency in the child's muscles. A biochemical reason for this pathology is the disorder of: Substrate-linked phosphorylation Transport of fatty acids to mitochondria Utilization of lactic acid Oxidative phosphorylation Regulation of Ca2+ rate in mitochondria Питання №: 40During hypersensitivity test a patient got subcutaneous injection of an antigen which caused reddening of skin, edema, pain as a result of histamine action. This biogenic amine is generated as a result of the following transformation of histidine: Phosphorylation Decarboxylation Deamination Isomerization Methylation Питання №: 41Point out the component of pancreatic juice, which neutralizes the chymus pH in the duodenum: Lipase Glucagon Trypsin Sodium hydrocarbonate Insulin Питання №: 42In a newborn child milk curdling occurs in stomach, this means that soluble milk proteins (caseins) transform to insoluble proteins (paracaseins) by means of calcium ions and a certain enzyme. What enzyme takes part in this process? Pepsin Rennin Lipase Secretin Gastrin Питання №: 43Phosphofructokinase (PFK) is the most important regulatory enzyme in glycolysis. This enzyme catalyses the rate limiting committed step. PFK is an allosteric enzyme regulated by allosteric effectors. Which of them inhibit PFK? AMP and ADP ATP and citrate cAMP and lactate fructose -2,6-bisphosphate and Pi glucose-6-phoshate and pyruvate |