Biological Classification And System Of Classification Question 421
Question: 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 a 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.
Options:
A) (i) and (ii)
B) (ii) and (iii)
C) (i) and (iii)
D) (i), (ii) and (iii)
Show Answer
Answer:
Correct Answer: C
Solution:
Bacterial cell wall is made up of peptidoglycan, non-cellulosic amino acids etc.
Archaebacteria are characterized by the absence of peptidoglycan 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{}^\circ C $ and pH as low as 2, e.g., Thermoplasma, Thermoproteus.
BETA
