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Питання №: 28Lipids are natural organic compounds, which are: Good soluble in water Insoluble in organic solvents Insoluble in benzene Soluble in organic solvents Soluble in buffer solutions Питання №: 29Unknown enzyme was added into two test tubes. The first tube contained starch, the second one - sucrose. After 10 min. incubation the solution in the first tube gives the positive Feling reaction, in the second one - negative. What enzyme was added? lipase sucrase amylase nuclease lactase Питання №: 30Patients who suffer from severe diabetes and don't receive insulin have metabolic acidosis. This is caused by increased concentration of the following metabolites: Ketone bodies Fatty acids Unsaturated fatty acids Triacylglycerols Cholesterol Питання №: 31Point out the component of pancreatic juice, which neutralizes the chymus pH in the duodenum: Lipase Glucagon Trypsin Sodium hydrocarbonate Insulin Питання №: 32Biosynthesis of the purine ring occurs owing to ribose-5-phosphate by gradual joining of nitrogen and carbon atoms inside the heterocyclic structure and closing of the rings. The metabolic source of ribose-5-phosphate is: Pentose phosphate pathway Glycolysis Glycogenesis Gluconeogenesis Glycogenosis Питання №: 33What kind of reactions is catalyzed by Hydrolases? Hydrolytic cleavage of substrates Transfer of hydrogen atoms between substrates Addition to double bonds Formation of bonds with ATP cleavage Formation of ester bonds between radicals Питання №: 34Protein avidin, a minor constituent of uncooked eggs, is a powerful specific inhibitor of biotin enzymes. Which of the below listed metabolic transformations would be blocked in case of the avidin addition to the cells homogenate? Glucose to ribose 5-phosphate Glucose to pyruvate Oxaloacetate to glucose Citrate to pyruvate Pyruvate to oxaloacetate |