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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: 游客未登录  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 all the characte gbv.bl94) v f+ud5sgrristics of living things, viruses are not consideredl g)s9g4 5b rf.udvb+v to 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 accurate description of a nucleof81 w uv1oijpfv n npl2+7+h3ztide?

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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 backboscpj bsq8qx 1 :i+ja:5ne 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 belowwyk9b b;-4. a d3uhpoc. (5 marks) 4p ocdy-b3 u.wb9k ;ah
(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 cj grch- x+g17w dxb.c,omplimentary 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 the replication i d(wa*+w;tw yof DNA aydiwtw+(*;a ws the 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 outlincnt c4s 1yc49:wh++gne,oui le the differences between the structure of RNA and DNA 4c1 9gs i nwc4ylnu+e:ch ot+,
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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 materptvu6k+s)yq-x (oo6 r ial of all living organisms. Outline how it is possible for these uu k+y)qsrpo t6-vx 6o(niversal DNA molecules to store varied 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 bacter 6f13kkkuf)ftoy*b ,j iophages to demonstrate that DNA, not protein, is the genetic material. This investigation used radioactive o b,fuj6ft 1ky3f )k*kphosphorus 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. thhorhji3gi5t*8 9j-Describe the structure of at -9 iith jjgh3ro*8h5 nucleosome.
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