Тест 1
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Питання №: 2Laboratory examination of a child revealed increased concentration of leucine, valine, isoleucine and their ketoderivatives in blood and urine. Urine smelt of maple syrup. This disease is characterized by the deficit of the following enzyme: Dehydrogenase of branched amino acids Phosphofructomutase Aminotransferase Glucose-6-phosphatase Phosphofructokinase Питання №: 3Under Girke's glycogenosis the conversion of glucosc-6-phosphate into glucose is disturbed, which results in excessive glycogen accumulation in liver and kidneys. The deficiency of what enzyme is the cause of the disease? Glycogen phosphorylase Glycogen synthase Glucose-6-phosphatase Hexokinase Aldolase Питання №: 4Thyrotoxicosis leads to increased production of thyroidal hormones T3 and T4, weight loss, tachycardia, psychic excitement and so on. How do thyroidal hormones affect energy metabolism in the mitochondrion of cells? Disconnect tissue respiration and oxidative phosphorylation Stop respiratory chain Activate oxidative phosphorylation Stop substrate phosphorylation Activate substrate phosphorylation Питання №: 5The normal content of cholesterol in blood is: 5-10 mmol/l 10-15 mmol/l 13-18 mmol/l 1-4 mmol/l 3-55 mmol/l Питання №: 6An infant shows the darkening of scleras, mucous membranes, and auricles. The excreted urine darkens in the air, homogentisate is determined both in the blood and urine. What is the diagnosis? Alkaptonuria Albinism Cystinuria Porphyria Hemolytic anemia Питання №: 7How can be diabetic tendency detected? Determinating the level of 17-ketosteroids in blood By the glucose-tolerance test Determinating the glucose level in blood Determinating the glucose level in urine Determinating the haemoglobin level in blood Питання №: 8If the temperature of incubating environment is raised from 0° C up to 40° C the activity of human enzymes is usually increased. Find the cause of this change: The probability of ES complex formation is increased A denaturation of enzymes occurs The enzyme molecular charge changes The substrate molecular charge changes Enzyme action specificity varies |