更多"DNA肿瘤病毒（）"的相关试题:
[多项选择]RNA肿瘤病毒
A. 携带的癌基因V-onc来源于宿主的原癌基因
B. 携带的癌基因和宿主原癌基因的序列相同
C. 可能不携带癌基因
D. 是逆转录病毒
[单项选择]属于肿瘤病毒的是
A. HPV
B. HIV
C. HBV
D. HTLV
E. EBV
[填空题]逆转录病毒按其致病作用分三个亚科：RNA肿瘤病毒亚科、慢病毒亚科和______。
[单项选择]DNA不是
A. DNA复制的模板
B. RNA转录的模板
C. 遗传的物质基础
D. 蛋白质合成的模板
E. 基因的结构基础
[不定项选择]DNA复制需要：①DNA聚合酶Ⅲ，②解链蛋白，③DNA聚合酶Ⅰ，④DNA指导的RNA聚合酶，⑤DNA连接酶，其作用顺序是：（）。
A. ④③①②⑤
B. ②③④①⑤
C. ④②①⑤③
D. ④②①③⑤
E. ②④①③⑤
[单项选择]进行DNA复制实验时，保留全部DNA复制体系成分，但以DNA聚合酶Ⅱ代替DNA连接酶，试分析可能会出现什么后果
A. DNA高度缠绕，无法作为模板
B. DNA被分解成无数片段
C. 无RNA引物，复制无法进行
D. 随从链的复制无法完成
E. 冈崎片段生成过量
[单项选择]DNA指导DNA合成过程叫作（）
A. 逆转录
B. 中心法则
C. 复制
D. 翻译
E. 转录
[名词解释]B-form DNA；Z-form DNA
[单项选择]可抑制DNA聚合酶和少量掺入DNA，阻止DNA合成的药物是（）。
A. 喜树碱
B. 硫酸长春碱
C. 多柔比星
D. 紫杉醇
E. 盐酸阿糖胞苷
[单项选择]原核生物DNA复制中①DNA聚合酶Ⅲ，②解链酶，③DNA聚合酶I，④DNA指导的RNA聚合酶，⑤DNA连接酶，⑥SSB，的作用顺序是
A. ④③①②⑤⑥
B. ②③⑥④①⑤
C. ④②①⑤⑥③
D. ④②⑥①③⑤
E. ②⑥④①③⑤
[单项选择]抑制DNA回旋酶，使DNA复制受阻，导致DNA降解而细菌死亡的药物是（）
A. 甲氧苄啶
B. 诺氟沙星
C. 利福平
D. 红霉素
E. 对氨基水杨酸
[单项选择]第二篇DNA Fingerprinting
DNA is the genetic material found within the cell nuclei of all living things. In mammals the strands of DNA are grouped into structures called chromosomes. With the exception of identical siblings (as in identical twins), the complete DNA of each individual is unique.
DNA fingerprinting is sometimes called DNA typing. It is a method of identification that compares bits of DNA. A DNA fingerprint is constructed by first drawing out a DNA sample from body tissue or fluid such as hair, blood, or saliva. The sample is then segmented using enzymes, and the segments are arranged by size. The segments are marked with probes and exposed on X-ray film, where they form a pattern of black bars — the DNA fingerprint. If the DNA fingerprints produced from two different samples match, the two samples probably came from the same person.
DNA fingerprinting was first developed as an identification technique in 1985. Originally used to detect the presence of genetic diseases, it
A. the subjective interpretation of test results.
B. its complex procedure
C. its large scale research.
D. its uniform testing standards.
