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

1#

Which is characteristic of both prokaryotes6ciib,3:jv)znppg;8h vip a2 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 ot.9 uia:p0x p :irvrh+ aml*sa.her characteristic liu0:h*s:.l ximr.ip+a 9 pavrasted below distinguishes 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 coronavm)pafszlp5h3)s-y;zu9c yzfk o;( j0 iruses are both viruses affecting living organisms. Which structures are present in both bf p zsjz;ym(hpf509c-l;a3u o ))ky szacteriophages 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 shows the correct characteristics of viruses, prokaryotrf5ysg dme0 (9u,+iztes andm ,5iuef s(r+09ztgy d eukaryotes?

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 id6/duvg6yf 8the bactefd y6vud/g86i riophage 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 virus which reproduces b313u66rzq x2sbr4o 3o8c x vopl*png using the lytic or lysogenic cycle.3g2 o 3xzo1*r4o36 lr 8su6xpc vpbqnb

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 immunodeficiet*qcmm u0nkfs v 7.3i(ncy 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 hosp5n(lq l. h-dqt bacteria using the lytic cycle or the lysogenic cycle. Which process is characteristic of the lysogenic cycle but not the lnp l.q- 5dlqh(ytic 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,yeu)0,i(kmezt8t* * mjlqin of the human immunodeficiency virusy8tek z( *m im0,*,qnej)litu?

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 researc ykvv- vn4riy1 ft:t*+d f7j)na7*z6ybl g7moh and exploration. Which statement ib1ft*gikv 47yv 6r- ym:n a z)jdy7tlov f*+7ns 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 material f8kb17kik. -pd rsn0tfound 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 4,q2w smhqhs- structure 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 its87wu-kqb w,)q ;x- kb1tpikj i effects on the immune system. kbp,wx j-; qqwi7k )-18bkitu

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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