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搜题
【单选题】
线性表采用链式存储时,结点的存储地址
A.
必须是连续的
B.
必须是不连续的
C.
连续与否均可
D.
和头结点的存储地址相连续
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皮皮学刷刷变学霸
举一反三
【单选题】CRISPR/Cas9 contains Cas9 and __________.
A.
sRNA
B.
mRNA
C.
siRNA
D.
sgRNA
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【单选题】CRISPR/Cas9的表达期内，spacers和repeats序列一起被转录成长链的（ ）
A.
pre-CrRNA
B.
pro-CrRNA
C.
pre-rRNA
D.
CrRNA
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【判断题】CRISPR/Cas9 system includes a CRISPR coding sequence and a Cas9 gene
A.
正确
B.
错误
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【单选题】传统彩塑一般都是塑绘结合的综合体，即____分塑____分绘
A.
七、 三
B.
四、 六
C.
三、 七
D.
六、 四
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【单选题】Which of the following is not true about CRISPR/Cas9 system ?
A.
The system contains a gRNA and an exo nuclease
B.
CRISPR refers to c lustered regularly interspaced short palindromic repeat
C.
A gRNA guides the endonuclease to load on a DNA target and cut it
D.
It is a part of immunity system of bacterium used to resist the foreign DNA
E.
The system contains a gRNA and an endonuclease
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【单选题】传统彩塑一般都是塑绘结合的综合体，即____分塑____分绘
A.
三、七
B.
四、 六
C.
七、三
D.
六、 四
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【多选题】Which of the following statements about gene editing by CRISPR/Cas9 are correct?
A.
On Jan 21, 2018, The Wall Street Journal reported that 86 people in China have had their genes edited using CRISPR/Cas9.
B.
In April 2015, Chinese scientists reported results of an attempt to alter the DNA of non-viable human embryos using CRISPR/Cas9 to correct a mutation that causes β-thalassemia. The study had previously been rejected by both Nature and Science in part because of ethical concerns. The experiments resulted in changing only some genes, and had off-target effects on other genes. The researchers stated that CRISPR/Cas9 is not ready for clinical application in reproductive medicine.
C.
In April 2016, Chinese scientists were reported to have made a second unsuccessful attempt to alter the DNA of non-viable human embryos using CRISPR/Cas9 - this time to alter the CCR5 gene to make the embryo HIV resistant.
D.
Heritable modifications could have unintended and far-reaching consequences for human evolution, genetically (e.g. gene/environment interactions) and culturally (e.g. Social Darwinism). Altering of gametocytes and embryos to generate inheritable changes in humans was defined to be irresponsible.
查看完整题目与答案
【单选题】肺实变最早出现的体征是:
A.
支气管语音
B.
语颤增强
C.
叩诊浊音
D.
湿啰音
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【简答题】肺实变最早出现的体征是（ ）
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【单选题】肺实变最早出现的体征是:
A.
支气管语音
B.
语颤增强
C.
叩诊浊音
D.
湿啰音
E.
呼吸音消失
查看完整题目与答案
相关题目：
【单选题】CRISPR/Cas9 contains Cas9 and __________.
A.
sRNA
B.
mRNA
C.
siRNA
D.
sgRNA
查看完整题目与答案
【单选题】CRISPR/Cas9的表达期内，spacers和repeats序列一起被转录成长链的（ ）
A.
pre-CrRNA
B.
pro-CrRNA
C.
pre-rRNA
D.
CrRNA
查看完整题目与答案
【判断题】CRISPR/Cas9 system includes a CRISPR coding sequence and a Cas9 gene
A.
正确
B.
错误
查看完整题目与答案
【单选题】传统彩塑一般都是塑绘结合的综合体，即____分塑____分绘
A.
七、 三
B.
四、 六
C.
三、 七
D.
六、 四
查看完整题目与答案
【单选题】Which of the following is not true about CRISPR/Cas9 system ?
A.
The system contains a gRNA and an exo nuclease
B.
CRISPR refers to c lustered regularly interspaced short palindromic repeat
C.
A gRNA guides the endonuclease to load on a DNA target and cut it
D.
It is a part of immunity system of bacterium used to resist the foreign DNA
E.
The system contains a gRNA and an endonuclease
查看完整题目与答案
【单选题】传统彩塑一般都是塑绘结合的综合体，即____分塑____分绘
A.
三、七
B.
四、 六
C.
七、三
D.
六、 四
查看完整题目与答案
【多选题】Which of the following statements about gene editing by CRISPR/Cas9 are correct?
A.
On Jan 21, 2018, The Wall Street Journal reported that 86 people in China have had their genes edited using CRISPR/Cas9.
B.
In April 2015, Chinese scientists reported results of an attempt to alter the DNA of non-viable human embryos using CRISPR/Cas9 to correct a mutation that causes β-thalassemia. The study had previously been rejected by both Nature and Science in part because of ethical concerns. The experiments resulted in changing only some genes, and had off-target effects on other genes. The researchers stated that CRISPR/Cas9 is not ready for clinical application in reproductive medicine.
C.
In April 2016, Chinese scientists were reported to have made a second unsuccessful attempt to alter the DNA of non-viable human embryos using CRISPR/Cas9 - this time to alter the CCR5 gene to make the embryo HIV resistant.
D.
Heritable modifications could have unintended and far-reaching consequences for human evolution, genetically (e.g. gene/environment interactions) and culturally (e.g. Social Darwinism). Altering of gametocytes and embryos to generate inheritable changes in humans was defined to be irresponsible.
查看完整题目与答案
【单选题】肺实变最早出现的体征是:
A.
支气管语音
B.
语颤增强
C.
叩诊浊音
D.
湿啰音
查看完整题目与答案
【简答题】肺实变最早出现的体征是（ ）
查看完整题目与答案
【单选题】肺实变最早出现的体征是:
A.
支气管语音
B.
语颤增强
C.
叩诊浊音
D.
湿啰音
E.
呼吸音消失
查看完整题目与答案