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习题练习:Unity and Diversity A.3 Origin of Cells



 作者: admin   总分: 11分  得分: _____________

答题人: 匿名未登录  开始时间: 23年07月31日 11:09  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What provides evidence that all life otlffpzsh*(v.v i)v3 wi7d*c ;n Earth evolved from the same population of cells? **lvf v3f7d z(.p)wvc ;ithsi

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Identify the correct row in the table regarding the f0c5f7w(x. q0xufkj:k;s y b sformation of vesicles.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Whose experiments disproved spontaneous generation;x7ivt,jy6w/ gckn;s ?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which type of isotopes are coi ( j6*iwk e)5ugfm-lxmmonly used in absolute dating of fossils?

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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 sz-rxs-77 oc -- 9vgqrl) idm-x(2qthwtg(vhvtatements are reasons that RNA is believed to be the first9rwv--7t dzqv--shx2 tg cvg)qo- hli((rx7 m genetic material?
I. RNA can form spontaneously when nucleotides are present
II. RNA contains ribose as its sugar
III. Miller demonstrated that organic molecules could be produced from a mixture of gases under conditions that simulated early Earth

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6#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
The diagram below shows the apparatus used in the hlf,4r*el9tomb: 3 sy.nc) frexperiments conducted by Miller and Urey. t re)or.mf*3yls4fn 9l,c:b h


Describe how this experiment showed that the origin of life was possible on early Earth.
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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In the early 19th century, vitalism zutvfp;h6,z xnr*3k6x: hm4jwas a widely accepted theory. This theory suggested that organic compounds, those ,fm;xxzp nk6zuh rt 3j4*:hv6found in living organisms, could only be produced through a "vital force" present in living matter.

What was the role of urea in falsifying the theory of vitalism?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following is not evidence to support that the last universb6j2g+ .h km,*clk elnal common ancestor lgj*h6+,. k2 nbmcelk (LUCA) could have emerged at hydrothermal vents?

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9#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Researchers carried ))*qeg7(h(y (0xudos2s4pc andb uzh c u+fg;out a similar experiment to Louis Pasteur’s famous experiment disproving spontaneous generatuh)u sd )f*a ;4csod((p2g uxy7e c+h0zq nb(gion, using the set up below at 30°C.



1.Outline the theory of spontaneous generation.

2.1.State two variables that must be controlled in this experiment.

2.2.Explain why it is important to have controlled variables in this study.

3.1.State the letters of three flasks which would show signs of decomposition of broth.

3.2.Explain your answer to part (i).

4.Suggest, with reasons, how the results of the study would differ if the flasks were incubated at 4°C.
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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Louis Pasteur's famous experiments disproving spontaneous generation were r.grta-t-y m(b eplicated by plabty-ga-m( .trcing broth into various flasks.

Which two flasks would show the presence of microorganisms in the results?

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11#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Below is a diagram of Eugleejsjiih7xapfg69n 5a3; -ki4 na a photosynthetic protist. It is a living cell which can 7hpieai46n5if js3ax;g k j-9carry out all the functions of life.

1.1.State which function of life the flagellum is adapted for.

1.2.State which function of life is enabled by the contractile vacuole.

2.Outline why viruses are not regarded as living organisms.

3.State two main principles of the cell theory

4.Explain how the properties of phospholipids mean they naturally form vesicles when in aqueous solution.

5.Explain how the formation of vesicles was important in the evolution of cells.
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