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Read the following statements regarding archaebacteria and select the correct option

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 are true

b)

I and III are true

c)

II and III are true

d)

I, II and III are true



Question ID - 60 | SaraNextGen Top Answer

Read the following statements regarding archaebacteria and select the correct option

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 are true

b)

I and III are true

c)

II and III are true

d)

I, II and III are true

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

Bacterial cell wall is made up of peptidoglycan, protein, non-cellulosic carbohydrates, lipids, amino acid, etc.

Archaebacteria are characterised by the absence of peptidoglycan in their wall. Instead, the wall contains proteins and no-cellulosic polysaccharides.

Thermoacidophiles have duel 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  and pH as low as 2,  Thermoplasma, Thermoproteus

127 votes


127