$Thermococcus$,$Methanococcus$ and $Methanobacterium$ exemplify:
- Abacteria whose $DNA$ is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria.
- Bbacteria that contain a cytoskeleton and ribosomes.
- Carchaebacteria that contain protein homologous to eukaryotic core histones.
- Darchaebacteria that lack any histones resembling those found in eukaryotes but whose $DNA$ is negatively supercoiled.
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Similar Questions
Which of the following organisms are included in the group $Prokaryota$?
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View SolutionThe smallest known bacteria is:
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View SolutionSelect the correct statements from the given statements $(1-4)$ regarding the characteristics of some organisms.
$(1)$ Methanogens are Archaebacteria that produce methane in marshy areas.
$(2)$ $Nostoc$ is a flagellated blue-green alga that fixes atmospheric nitrogen.
$(3)$ Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
$(4)$ Mycoplasma lacks a cell wall and can survive without oxygen.
$(1)$ Methanogens are Archaebacteria that produce methane in marshy areas.
$(2)$ $Nostoc$ is a flagellated blue-green alga that fixes atmospheric nitrogen.
$(3)$ Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
$(4)$ Mycoplasma lacks a cell wall and can survive without oxygen.
Medium
View SolutionThe cyanobacteria are also referred to as
What are barophilic prokaryotes?
MediumAIPMT 2005
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