The major criteria used in placing bacteria into different groups is based on differences in
A) cell wall structure.
B) cell membrane permeability.
C) presence or absence of flagella.
D) detergent susceptibility.
E) presence or absence of cytoplasmic membrane.

Question

Quizplus · Accepted Answer

The major criteria used in placing bacteria into different groups is based on differences in cell wall structure. Bacteria can be classified into two major groups based on differences in their cell walls: Gram-positive bacteria and Gram-negative bacteria. This is due to the differences in their cell wall structure, specifically the presence or absence of an outer membrane and the composition of their peptidoglycan layer. Other characteristics, such as presence or absence of flagella or cytoplasmic membrane, may be used in further differentiating bacterial groups, but cell wall structure is the primary criteria.

The Major Criteria Used in Placing Bacteria into Different Groups