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Question: Answered & Verified by Expert
Thermococcus, Methanococcus and Methanobacterium are groups of
BiologyBiological ClassificationJIPMERJIPMER 2015
Options:
  • A bacteria containing a cytoskeleton and all membrane bound organelles
  • B archaebacteria with peptidoglycan in their cell wall
  • C archaebacteria that consists of protein homologous to eukaryotic core histones
  • D most advanced type of bacteria
Solution:
2812 Upvotes Verified Answer
The correct answer is: archaebacteria that consists of protein homologous to eukaryotic core histones
Archaebacteria are the most primitive and ancient bacterial species.
Key characteristic features are
(i) Lack of peptidoglycan in cell wall instead pseudomurein is present.
(ii) Lipids in cell membrane have different structure than in all other organisms.
(iii) They lack membrane bound organelles.

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