| Identify the correct statements regarding archaebacteria. |
| (i) Archaebacteria differs from other bacteria in having different cell wall structure. |
| (ii) Their cell wall is made up of cellulose and contains high amount of unsaturated fatty acid, which is responsible for their survival in extreme conditions. |
| (iii) Thermoacidophiles have dual ability to tolerate high temperature as well as high acidity. |
A) (i) and (ii)
B) (ii) and (iii)
C) (i) and (iii)
D) (i), (ii) and (iii)
Correct Answer: C
Solution :
Bacterial cell wall is made up of protein, non- cellulosic ammo acid etc. Archaebacteria are characterised by the absence ofpeptidoglycan in their wall. Instead, the wall contains proteins and non-cellulosic polysaccharides. Thermoacidophiles have dual ability to tolerate high temperature as well as high acidity. They often live in hot sulphur springs, where the temperature may be as high as 80°C and pH as low as 2, e.g., Thermoplasma, Thermoproteus.
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