Unity and Diversity A.5 Viruses - 题库网 (tiku.one)

1#

Which is characteristic of both prokaryotes andq:pa+1,nf,butvclmx h q9 nbgz )u779 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 veryvxwj utm s 1jdun/h7vx7 2))7 qds:1ow small. Which other characteristic listed below distingui/j7o wvdm71jx nu 1wussv2:t7qh) d)xshes 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 affectinqswceuam 1 zl i1k ai+mzga, *h/96*n/g living organisms. Which structures are present in both bacteriophages and coronaviruses? *+1 wz/,ziielhu6qks /m9mnaa 1a*cg
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 belo 2dis2 kxfz*vd2df-y(w shows the correct characteristics of viruses, prokaryotes and eukaryotes?y (d2x* -f 22ddfsvizk

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 somu zz1)ffz::2g9edh mk e viruses are not present in both the bacterio2k: f ezz):1ufhdgm9 zphage 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 using/rur7 rd vy7j1f7o) o p wnu:dk(8na 2yx7uw1m the lytic or lysogenic cycle. nvo7 /jdp 18y wduyxu r7n(m 1)o7krwfur72: a

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 immunodeficienc noo1ef0/g9xzloz /4t y 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 bacteria using the lytic cx ./ zqd8eo:tvycle or the lysogenic cycle. Which process is cq e:tdv /zox8.haracteristic 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 thoya3k(a2gayw0 9 y)znbr7wf:e human immunodeficiency virus9bz w:( 03w7ykryoy2a g)nfa a?

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 h+ xffhg-v83r active research and exploration. Which statementh g3 rfhf+xv-8 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 material found in7(m f 483;njjzjn d0ypdb.nxa 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 glycopw 4khd9w(kb 6muf4 eyia3q l:sk1+:ogb : cmc3roteins?

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 systeqhn97qljxgpuq ; dje224 ai(27+bjidm. x( jl24a;pi eu7 i27b+qqqdngjh2dj9

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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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which is not characteristicmlxjeu0+ o 93x of HIV?

A. The viral RNA encodes for reverse transcriptase

B. Spike glycoproteins allow for entry into CD4 cells

C. Two single strands of RNA are encased in a capsid

D. Integrase proteins are required for entry into a host cell

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