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

1#

Which is characteristic ou5bzcvn z4k)9wd6 0g.ebvf4jf both prokaryotes 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 small. Whiv7m*8ib2kq; sno4c i zch other characteristic listed below distinguishes viruses i;ksic7b omnv*z248 q 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 li28(ql pj xqi0lving organisms. Which structures are present in both bacteriopl28qlx( ipj0 qhages and coronaviruses?
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 shov6+6 gq pn, ;sn;bm+nx0ob+ t;xjrup ews the correct characteristics of viruses, prokaryotes and eut p;+ j0+qr p6; ;e+gs bbxunvnnxmo6,karyotes?

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 vir6z;bj6os dhlf +7:pa cuses are not present in both the bacteriophagezl6f + 7dj;achsb:p6o and coronavirus?

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 ydbs 9)gk0z:t 3o;/ipm. cfig hh 7r9bvirus which reproduces using the lytic or lysogenic cycle.o9r97d 0y:h)/ g; btpk gsmc3.ifbhzi

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.

该题自我估分: (必填) (满分:1.0分)

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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 hu 7ac/w4m8 prlcman immunodeficiency virus (HIV).

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 bacteriat nq6h qhhrgh+4 8 6:u3zoa vt3nts*iah)*x 3c using the lytic cycle or the lysogenic cycle. Which process is characteristic of the lysogenic cycle but not3:6 ihh )t3 xgqn3aots8 zhuhctn rq6+v**a 4h 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 th23,n 6cta 5e6oiulg lt lp;nck,cc+o 0e human immunodeficiency virus, acotgt nuki l6ln0o562; cl,c3ec+p?

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 arsbs 5x9 z;ys9wea of active research and exploration. Which statement is not evidence that viruses have ors95; ysbsxw9 zigins 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 material found in+x2+5srdmt6 f y- efcdbls),a 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 glycoproteins? o-; guqsu3jg-

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 transmission and its effects on the immune syste1 c5gkbqk8-n,d/ rxnv m. kxbg- r8c,kdq1v/n5n

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.

该题自我估分: (必填) (满分:1.0分)

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