Viruses And Bacteria
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This test is specifically designed to test your knowledge on viruses among other related things. It might not be as easy as you think but just try it out to see how you will do.
- 1.In biologist Wendell Stanley's 1933 investigation of the tobacco mosaic virus, he found that the purified virus
- A.
Formed crystals that retained the ability to infect healthy tobacco plants
- B.
Consisted of living organisms that did not retain the ability to infect healthy tobacco plants
- C.
Formed crystals that did not retain the ability to infect healthy tobacco plants
- D.
Consisted of bacteria that could infect healthy tobacco plants
- 2.After Stanley's findings, scientists found that each particle of TMV is made of only two kinds of molecules. These are
- A.
The nucleic acid RNA and protein
- B.
The nucleic acid DNA and protein
- C.
The nucleic acid RNA and lipid
- D.
Protein and lipid
- 3.Viruses and cells are alike in that both
- A.
Respire
- B.
Have membranes
- C.
Reproduce
- D.
Synthesize proteins
- 4.Icosahedron refers to the structure of a virus's
- A.
Capsid
- B.
Phage
- C.
Lipid layer
- D.
Nucleic acid
- 5.HIV can reproduce
- A.
Only within human cells
- B.
Only within mammal cells
- C.
Within the cells of any organism
- D.
Anywhere the temperature and moisture content are adequate
- 6.When a bacterium has a cell wall with a large amount of petidoglycan, it is
- A.
Gram-neutral
- B.
Gram-positive
- C.
Gram-negative
- D.
Resistant to penicillin
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