Unity and Diversity A.5 Viruses - 无忧得胜-网上国际课程 (5edu.win)

1#

Which is characteristic of both prokary)h,-kz5s0nq6yqhwiw otes and viruses?

I. Contain genetic code
II. Rely on host cell for metabolism
III. Surrounded by cell wall

A. I only

B. I and II

C. II and III

D. I, II and III

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Viruses, compared to living organisms, are very sge vcii; )f6d)crujk- 7o9(t amall. Which other characteristic listed below d i7(9ct)iagc-u;) doev6 kjrfistinguishes viruses from unicellular living organisms?

A. Contain genetic material

B. Contain cytoplasm

C. Lack enzymes

D. Genetic material is surrounded by a capsid

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Bacteriophages and coronaviruses are both viruses affecting living organismsuhcfr f/ 0h,3u. Which structures are present in both bacteriophages and coronaviruses? fhf urhu/c30,
I. cytoplasm
II. capsid
III. genetic material

A. I only

B. I and II only

C. II and III only

D. I, II and III

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which of the rows below shoqs*r-v1aaiijt-2 a ;aai0 4/nxnaw5v ws the correct characteristics of viruses, prokaryotes and eu;0s 2n v*iqnj/a5vawi aa- a-1 ixa4rtkaryotes?

A. Virus is Genome is DNA or RNA

rokaryote is Genome is DNA only;Eukaryote is Genome is DNA only

B. Virus is Genome is Rely on host cell for nutrition

rokaryote is Rely on host cell for nutrition;Eukaryote is Does not rely on host cell for nutrition

C. Virus is Genome is Synthesises ATP for energy supply

rokaryote is Synthesises ATP for energy supply ;Eukaryote is Genome is Synthesises ATP for energy supply

D. Virus is Genome is Capsid present

rokaryote is Capsid present;Eukaryote is Capsid present

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which of the following components of some viruses are not present in both the ao 1s vb 8*-j4y;b+rcsjjr5vgbacteriophage and coronavirac;v sgjj5j +vo-s8*1r bbr4yus?

A. Genetic information surrounded by a capsid

B. RNA genome

C. Enzymes for replication

D. Structures for attachment to a host cell

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6#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

The image below shows a vhuzf8 c-7a 0mebw1 che3/ r.2jtt x9eiirus which reproduces using the lytic or lysogenic cycle0 t3xi-ru cb9.2hth1z fc aj/me 8ewe7.

1.State two structural features common to all viruses.

2.1.Identify the name of this virus.

2.2.Label the capsid on the image.

3.Compare and contrast the lytic and lysogenic cycles.

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7#

填空题 ( 1.0 分) 切至整卷模式搜藏此题

The image below shows the human immunodeficiency virus (HIV)h yydf:8 alba+ 21k1ud.

1.Explain the function of structure X.

2.1.Identify structure Y. Y is .

2.2.Identify structure Z. Z is .

3.State the host of this virus.

4.Describe the metabolic functions of reverse transcriptase.

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Some bacteriophages infect host bacteria using the lyci b 5:aa:x;fq 9mso)f 2z/,zmgcw yb-tic cycle or the lysogenic cycle. Which process is char9:2c,-foxa bzmmw/b c:gfs5qzy ai ;)acteristic of the lysogenic cycle but not the lytic cycle?

A. Phage DNA is injected into the host cell.

B. The phage inserts DNA into host DNA, forming a prophage.

C. Host bacterium is killed by cell lysis.

D. Phage proteins bind to receptors on the host bacterium cell.

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which is not a factor in the rapid evolution of 8e 0spyv7t kmh: mnw/7the human immunodeficiency virus?w7:emp 7/vy08nms h kt

A. Genetic recombination

B. High mutation rate

C. Slow replication rate

D. Genetic diversity of host population

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The origin of viruses is an area of active research and exploro qe0 l:,ph/iu*4ulk aation. Which statement /uqlo*kl0, pahu:ei4 is not evidence that viruses have origins in other organisms?

A. Similarities between genome sequence in viral and cellular genes.

B. Coevolution of viruses and host.

C. Retroviral enzymes such as reverse transcriptase convert RNA to DNA.

D. Rate of mutation is rapid in viruses.

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11#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

1.Outline the varied forms of genetic materfwedu1d x 3d1/f7 o(wkial found in viruses.

2.Discuss the evidence supporting that the diversity of viruses exists as a result of convergent evolution.

3.Compare the structure of the coronavirus with the human immunodeficiency virus, HIV.

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diagram of HIV is shown below. Which structure is composed of glycoprote1 o kd6mcj:jqyhm8 :6uhtou,1ins?

A. B. C. D.

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13#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

1.Outline the methods of HIV transmissk g1 p9j5cn*b6uu*xs) t5uwyyion and its effects on the immune system. t nu)pkcyu1*wj*5uyb95 x6sg

2.Discuss the need for international cooperation to fight contagious diseases such as Ebola.

3.Antibiotics are an essential tool of modern medicine. Outline the strengths and limitations of antibiotics.

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