Q3 of 39 Page 41

Is extra genomic DNA present in prokaryotes and eukaryotes? If yes, indicate their location in both the types of organisms.

Yes, extra genomic DNA is present in prokaryotes and eukaryotes.


• In eukaryotes, the extra genomic DNA is present in mitochondria and plastids.




• In many prokaryotic bacteria, small circular DNA called plasmids are present outside genomic DNA which helps the cell develop some phenotypic characteristics like resistance to anti-biotics.



More from this chapter

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1

What structural and functional attributes must a cell have to be called a living cell?

 2

Briefly give the contributions of the following scientists in formulating the cell theory

a. Robert Virchow


b. Scheilden and Schwann


 4

Structure and function are correlatable in living organisms. Can you justify this by taking plasma membrane as an example?

 5

Eukaryotic cells have organelles which may a. not be bound by

a membrane


b. bound by a single membrane


c. bound by a double membrane


Group the various sub-cellular organelles into these three categories.