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

1#

Which is characteristic of both prokaryotes and virusn7pauf 3 u v87,dv-l7aoq 1ukl9m8wioes?

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 smigc-c p: yaoa ooi 1ei;,r3.3mall. Which other characteristic listed below distineip igca;ro ay1o3., i:o-cm3guishes 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 organisms.,iai*(o 34eykl pmrz8: ,sv hg Which structures are present in both bacteriophages andhi ,a8lm:(gk,opvy 3seri4*z 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 char,p -: b *qt,fl*va;rpbthc9fd acteristics of viruses, prokaryotes ath;rp f*b ,, d9bqv-*alctp f:nd 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 vire o o:w7nt 72qnxbw/y3uses are not present in both the bacteriophage and coronaviru we2 7/:onxto3qyn7wb s?

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 the lytic or lysogenic 4pz x5w(m(mrq gau3akn,w (,;x*qc90qhxcdycyclec * ragh wp9x;y,4(qwd0nmqqux3ck (5zm(, xa .

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 showx2szz c)oq4fyjx ,kakg1c2,3 s the human 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 vwjo7v0)z g w*)v*0nfnp6kvminfect host bacteria using the lytic cycle or the lysogenic cycle. Which process is characteristic of the lysogenic cycle butvfvv*7pn okj*)00 )vwnz6w mg 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).fr( 0tvwfj u rapid evolution of the human immunodeficiency virustfu.f )r( 0jwv?

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 area42 h0ebq;k+ xyvyg.wt 2sw wr 64agsn. of active research and exploration. Which statement is not evidence that viruses have origins in other orgas g2b kgr+tw6.ewh4ywn0x 2v ysq.;a 4nisms?

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/;pvfbzbo5 ex4yb99 r 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?vbgg k3r lh6+el97nl4yk/g 0 l

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 ovm*r2b ew0h/. (qvfu(h)yo r(e cw4xthe immune system. (bv ch r/m(fx 2vw uqe.)ye(orh w*0o4

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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