Question

Why are there no gram-positive archaea species, but there are gram-positive bacteria species?

Answer 1

ANSWER:

The correct option is: A. "Archaea lack peptidoglycan" in the walls of the cell. Peptidoglycan is a polymer of sugar and amino acids which forms a layer around the "plasma membrane" of bacteria.

EXPLANATION:

• This however does not mean that archaea lack cell wall. Archaea have cell walls that are similar to gram negative bacterial cell walls.

• Archaea are species that give a negative response to gran staining technique. Therefore, there are no gram positive archaea species. The cells walls in archaea may be of several different types of cell walls.  

Answer 2

Answer: A

Explanation:   Archaea possess a broader range of cell envelope structural formats than eubacteria and their cell walls do not contain peptidoglycan. Some archaea have only a single S-layer as their cell wall  whereas others have multiple layers.