Question

Archaebacteria differ from Eubacteria in

• A. Mode of nutrition
• B. Cell membrane structure
• C. Mode of reproduction
• D. Cell shape

Answer 1

The correct option is B

Cell membrane structure

The correct option is option B.

The explanation for the correct option:

Option B:

1. Archaebacteria have different cell membrane structures than other bacteria.
2. The lipids in archaebacteria cell membranes are ether-linked compared to ester-linked in other bacteria.
3. The difference in the cell membrane structure makes them more resistant to harsh environmental conditions.

Explanations for incorrect options:

Option A:

Both archaebacteria and eubacteria have autotrophic as well as heterotrophic modes of nutrition.

Option C:

Both of these types of bacteria reproduce either via conjugation, transformation, or transduction.

Option D:

Both of these types of bacteria can have these 4 shapes - Bacilli, Cocci, Vibrio, and Spirillum.

Final answer: Archaebacteria differ from Eubacteria in cell membrane structure.