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习题练习:Topic A1.2 Nucleic acids



 作者: admin发布日期: 2025-01-24 09:47   总分: 10分  得分: _____________

答题人: 匿名未登录  开始时间: 25年01月24日 09:47  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1. As they do not have a kajttfp:gt6j u,x2*a 5ep )n+ll the characteristics of living things, viruses are not considered tou,6gj)ptea *tp2k:xn5+ fjt a be living
organisms. Therefore which is the best evaluation of the statement, “One universal property of
living things is that they use DNA as the genetic material?”

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  2. Which is the most qnruot+s9 l:hd: pz7jhw2,/f5y )onma c m) u-accurate description of a nucleotide?

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  3. Which of the following describes the bac+qntt:smt /u 8kbone of DNA?

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4#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
4. Label the following parts of DNA on the diagram of DNA shown below. (/psv,:.t6 1 nytbx elv5 marks) n.,1 exyvtvbp s:/l6t
(a) Hydrogen bond
(b) Covalent bond
(c) Nitrogenous base
(d) Deoxyribose sugar
(e) A single nucleotide (by drawing a circle encompassing a single nucleotide)
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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
5. Explain, using the DNA diagram, the meaning of complimentarytwob8 ,w4s g(y base pairing.
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6#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
6. Outline how complimentary base pairing is important in tjxykv*h)z;9 .v9fcl 5 kfa; y)0r 4qeygde-gahe replication of DNA as t;* - c;aq90)vklda4hgefgy9z )rx fkyvye.j5he genetic material.
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7#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
7. Complete the table to outline the differenczdn4st aos;+bwpxbf 8-o 5:hk6 8few*es between the structure of RNA and 4x -nd8z phbt+5 bk6w fowoa:f; s*se8DNA
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8#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
8. DNA is the genetic material of all living o phiu 5w j4bsvo**1t6 +2nllyorganisms. Outline how it is possible for these universal DNA molecules to store vns5bj l1*4 ylh6oi pwou*+ 2tvaried genetic information both within species and between species.
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9#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
9. Hershey and Chase used viral bacteriopqrqa ;69kph9 1y,sbhihages to demonstrate that DNA, not protein, is the genetic material. This investigation used rashb9;kq6q ,ypiha9 r1 dioactive phosphorus to label DNA.

Outline how radioactive labelling was used in this investigation.
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10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
10. A nucleosome is a structural unit of a chromosome. Describe m:c 8 q dldslc2)cz1+q0ynem-the structure of a nucleosom-810qn:qlcldmc+ c)2z dme sye.
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