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发布时间:2023-10-23 03:41:50

[不定项选择题]由于基因融合,形成由一条多肽链组成却具有多种不同催化功能的酶是(  )。
A.单体酶
B.寡聚酶
C.结合酶
D.多功能酶

更多"[不定项选择题]由于基因融合,形成由一条多肽链组成却具有多种不同催化功"的相关试题:

[不定项选择题]参与合成多肽链正确折叠的蛋白质是(  )。
A.泛素
B.热激(休克)蛋白
C.逆转录酶
D.蛋白激酶
[不定项选择题]携带缺陷基因BRCA-1者易患的疾病是(  )。
A.白血病
B.结肠癌
C.甲状腺癌
D.肺癌
E.乳腺癌
[不定项选择题]基因毒性反应
A.E类药物不良反应
B.A类药物不良反应
C.H类药物不良反应
D.C类药物不良反应
E.G类药物不良反应(按发生机制分型)
[单选题]由于基因融合的结果,多种酶相互连接成一条多肽链的具有多个活性中心的酶
A.单体酶
B.单纯酶
C.结合酶
D.多功能酶
[不定项选择题]父母血型基因型为AO和BO,则其子女血型只可是


A.A型或O型

B.AB型或A型

C.O型

D.AB型或B型

E.AB型或A型或B型或O型

[不定项选择题]检测化学物的基因突变作用选用(  )。
A.微核试验
B.显性致死试验
C.细菌回复突变试验
D.骨髓染色体畸变试验
E.姐妹染色单体交换试验。
[不定项选择题]融合抑制剂()
A.NRTIs
B.NNRTIs
C.PIs
D.FIs
E.ELS
[不定项选择题]p53基因是一种(  )。
A.细胞原癌基因
B.抑癌基因
C.病毒癌基因
D.操纵子调节基因
[不定项选择题]转基因植物的基因具有植物属性,若不将其转变为动物属性的基因,即使特意将其转入动物细胞内,也不会有任何活性。因此,食用转基因植物是不会发生基因突变的。 上述论证的成立,需要补充以下哪项作为前提?
A.转基因植物的基因没有被转变为动物属性基因
B.我们食用的转基因植物的基因没有活性
C.转基因植物的基因没有被转入动物细胞内
D.食用没有活性的基因是不会发生基因突变的
[不定项选择题]hgprt基因突变试验检测(  )。
A.体细胞基因突变
B.生殖细胞基因突变
C.原发性DNA损伤
D.体细胞染色体畸变
E.生殖细胞染色体畸变
[不定项选择题]共用题干 Unlocking the Human Genome(基因组)

1 A project to unlock secrets一what scientist could resist that challenge?This is what many
scientists are doing as they work on the Human Genome Project.The aim of the project is
to decode(破译)all of the some 100,000 genes in the human body. Scientists are using
DNA fingerprinting techniques to do the decoding.
2 DNA is the substance found in the chromosomes(染色体)of a cell. A chromosome is a
chain of genes.Each gene carries a piece of genetic information.At any one moment in a
cell, thousands of genes are turned on and off to produce proteins(蛋白质).The challenge
for scientists is to find out what role each gene plays in protein production.At some point
this decoding will be complete.Then scientists will have a map of an ideal genome,or a
picture of the total genetic nature of a human being.The ideal genome is called a
consensus(交感)genome. Everything works well in a consensus genome.
3 But no one in the world has a consensus genome.Everyone's genome is different from
the ideal. These differences are referred to as genetic mutations(突变).Genetic
mutations in a person's genome mean that the person has a greater than average chance of
suffering from health problems.Some problems are not life-threatening.These would
include things like colorblindness,or mild headaches.Other problems are serious,such as
heart disease,or cancer.
4 It will take years to identify the role of each of the 100,000 genes.The short-term goal of
the project is to find the physical and mental health problems a person is likely to encounter
during his or her lifetime.The long-term goal is to have each person live a longer,healthier
life. Genetic mutations in a person's genome may affect_________.
A.that person's health
B.a scientific answer
C.scientific researchers
D.the genes
E.the function
F.the size

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