题目内容
（请给出正确答案）
[主观题]
Which enzyme deficiency can cause PKU？
A、Phe hydroxylase
B、Tyr hydroxylase
C、tyrosinase
D、tyr decarboxlase
E、dopamine hydroxylase
提问人：网友qiduanyu
发布时间：2022-01-07
题目内容
（请给出正确答案）
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更多“Which enzyme deficiency can ca…”相关的问题
第2题
Km is the characteristic constant of enzyme, which is only related to the properties of enzyme and is not related to the concentration of enzyme.
第3题
Which of the following metabolic regulation are not in cellular level
A、regulate intracellular enzyme contents
B、regulation by membrane receptors
C、covalent modification of enzymes
D、regulation by intracellular receptors
E、allosteric regulation of enzymes
第4题
Which enzyme is the key enzyme in glycogenolysis （glycogen degradation) ？
A、Phosphorylase
B、Hexokinase
C、Phosphoenol pyruvate carboxykinase
D、HMG-CoA reductase
E、Pyruvate kinase
第5题
Which of the following amino acid residues in enzyme molecule can be modified by phosphorylation
A.Tyr
B.Cys
C.Ser
D.Gly
E.Thr
第6题
During starvation, which of the following pathways have increased enzyme activity in liver
A、glycogen decomposition
B、pentose phosphate pathway
C、fat synthesis
D、gluconeogenic pathway
E、glycolytic pathway
第7题
Which of the following description about glycogen phosphorylase is false
A、It is the key enzyme for glycogen decomposition.
B、There are two forms including phosphorylase a and phosphorylase b.
C、Phosphorylase a is inactive form.
D、Enzyme activity is regulated by hormones.
E、Phosphorylase b is activated by phosphorylase kinase.
第8题
Which technique is used to resolve the different sizes of DNA fragments following a restriction enzyme digest
A、DNA sequencing
B、Gel electrophoresis
C、Gene cloning
D、PCR
第9题
Which DNA ligase enzyme is used in genetic engineering？
A、Bacterial ligase
B、T4 ligase
C、Yeast ligase
D、Pseudomonas ligase
第10题
Which enzyme deficiency can cause Albinism disease？
A、Tyr transaminase
B、Phe hydroxylase
C、Tyr hydroxylase
D、Tyrosinase
E、Phe transaminase
