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

1#

Which is characteristic of both prgt whr*;y k)7jokaryotes 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. Which other characn)a;:-hsm6jbe pp k+ateristic listed below distinguishes viruses from unicellaep; ma+:j-h k)6ps nbular 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 organisms. Ws9;kx p l9mo42f qk/kthich structures are present in both bactero ;924k fs qp9txkm/lkiophages 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 bedkxtpt ou+2 :6low shows the correct characteristics of viruses, prokaryotes and eukaryoxt:p+u6d2 ko ttes?

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 thefm b/9a l7m4 (2v.cgim v,3wgvtw gu9g bacteriophage and cw97ac3guv/ gtm,9l (g.mv iwmvfg4 b 2oronavirus?

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 virus wl 72yxqja*r98yw cy*b hich reproduces using the lytic or lysogenic cycla cy b2j8w9x* y*yqrl7e.

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 human immunodeficiency s9u9aw oak2y yho) 39ovirus (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 hrmu(efgs 4:4bacteria using the lytic cycle or the lysogenic cycle. Which process is characteristic of the lysogenic cycle but not the lytic(4hur :f4megs 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 factorje5zl xoh.:fb )2ym,r in the rapid evolution of the human immunodeficiency virusb el :y5or,2)h z.jmxf?

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 acfa)+co6b 7s j 5i9k s uk4ddusxqbp:)1tive research and exploration. Which statement is not evidence that viruses have origins in othefs qc6ko:dpjs)ius1 )kb4dab7 u +59xr 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 genetij/loq4 j1 ))f9fc* yrimyg9ns c material 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 iu0 u;vohb8 /istructure is composed of glycoproteins?

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 syslr9dmsm2 qy2j/, r dn-tem. ln- 2r mqy/d,rmj sd92

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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