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单选题 When congenital lack of phenylalanine hydroxylase, phenylalanine cannot be hydroxyled into tyrosine, this leads to
学科：Biochemistry（护理ISEC专业）
时间：2024-06-14 13:15:22
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题目1单选题
The rate-limiting enzyme of mobilization of fat is triacylglycerol lipase inhibited by hormones, which of the following hormones is the anti-lipolytic hormonesA. Adrenocorticotropic hormoneB. EpinephrineC. GlucagonD. insulin
题目2单选题
The rate-limiting step in pyrimidine de novo synthesis is catalyzed byA. Carbamoyl phosphate synthase II (CPS II)B. Carbamoyl phosphate synthase I (CPS I)
题目3单选题
When congenital lack of phenylalanine hydroxylase, phenylalanine cannot be hydroxyled into tyrosine, this leads toA. AlbinismB. PhenylketonuriaC. Megaloblastic anemiaD. Alkaptonuria
题目4单选题
When tyrosinase decrease, tyrosine can't convert into melanin, will lead toA. AlkaptonuriaB. Megaloblastic anemiaC. AlbinismD. Phenylketonuria
题目5单选题
Which enzyme catalyze the first energy-requiring step of glycolysisA. Lactate dehydrogenaseB. Phosphoglycerate kinaseC. Pyruvate kinasesD. Hexokinase
题目6单选题
The reason of glycogen catabolism in skeletal muscle does not directly supplement blood sugar is thatA. There is no phosphorylase in skeletal muscleB. There is no glucose-1-phosphatease in skeletal muscleC. There is no glycogen synthase in skeletal muscleD. There is no glucose-6-phosphatease in skeletal muscle
题目7单选题
____made of four polypeptides, 2 α-subunits and 2 β-subunits, each subunit contains one heme groupA. RibonucleaseB. MyoglobinC. HemoglobinD. Cytochrome C
题目8单选题
The end product of purine catabolism in humans isA. CreatinineB. Uric acidC. UreaD. Ammonia
题目9单选题
The jaundice caused by damage to liver cells ( in patients with cirrhosis or hepatitis), belongs toA. hepatocellular jaundiceB. obstructive jaundiceC. hemolytic jaundice
题目10单选题
The key enzyme for the synthesis of ketone bodies isA. acyl-CoA synthaseB. HMG -CoA synthaseC. HMG -CoA reductaseD. acyl-CoA carboxylase
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