Title: Difference between Archaebacteria and Eubacteria | KnowsWhy.com
Headings: Difference between Archaebacteria and Eubacteria
Difference between Archaebacteria and Eubacteria
What are Archaebacteria and Eubacteria?
Archaebacteria
Eubacteria
Difference between Archaebacteria and Eubacteria
1. Habitat
Archaebacteria
Eubacteria
2. Structure, size and shape
Archaebacteria
Eubacteria
3. Membrane Lipids
Archaebacteria
Eubacteria
4. Deoxyribonucleic acid (DNA) dependent Ribonucleic acid (RNA) Polymerase
Archaebacteria
Eubacteria
5. Antibiotic sensitivity
Archaebacteria
Eubacteria
6. Introns
Archaebacteria
Eubacteria
7. First amino acid in all proteins
Archaebacteria
Formylmethionine
Eubacteria
Methionine
8. Growth and reproduction
Archaebacteria
Eubacteria
9. Glycolysis/Kreb’s cycle
Archaebacteria
Eubacteria
10. Examples
Archaebacteria
Eubacteria
Conclusion
Author: Dr. Amita Fotedar

Content: Bacteria comprise of a single circular chromosome present in their cytoplasm. Types of eubacteria include gram positive and gram-negative bacteria. Gram-positive bacteria are the bacterial microorganisms that show positive in the Gram stain test, which enables classification of bacteria into two types on the basis of their cell wall. Gram-positive bacteria potentially take up the crystal violet stain and appear to be purple in colour when seen through the microscope. They appear purple because of the presence of thick peptidoglycan layer in the cell wall absorbs the violet stain after it washes away from the remaining sample, during the decolorization step. Gram-negative bacteria do not possess the ability to absorb violet stain. The reason is that the alcohol used destroys the outer membrane of the gram-negative cells making the cell wall permeable effecting its capability to retain the crystal violet stain. The peptidoglycan layer in gram-negative bacteria is quite thin and appears red or pink as it is present between the inner and outer cell membrane causing the bacteria to take up the counterstain. Gram-positive bacteria are more receptive to antibiotics due to the lack of outer membrane. Figure 2.