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Earn 100

Which of the following is not correct statement about the plasmids
(a)It is the extra chromosomal DNA in bacteria
(b)It is not a integral part but inert genetic material
(c)Host chromosome can be integrated with the plasmid
(d)Transfer of plasmid can be done from cell to cell without killing the host

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Important Questions on Biological Classification
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MEDIUM
Match the following lists:
List-I | List-II | ||
(A) | Photoautotroph | (I) | Nitrosomonas |
(B) | Chemoautotroph | (II) | Rhodospirillum |
(C) | Photoheterotroph | (III) | Salmonella |
(D) | Chemoheterotroph | (IV) | Chlorobium |
The correct match is:

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I. Cyanobacteria are referred to as blue-green algae.
II. They perform oxygenic photosynthesis in chloroplasts.
II. The red-colour of red-sea is due to the presence of a cyanobacterial species Trichodesmium erythraeum.
IV. All the cyanobacterial species can fix atmospheric in specialised cells called heterocysts.

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Given below are two statements:
Statement : Mycoplasma can pass through less than 1 micron filter size.
Statement : Mycoplasma are bacteria with cell wall.
In the light of the above statements, choose the most appropriate answer from the options given below:

