Which Bacterial Genus Normally Lacks a Cell Wall

Question

Which bacterial genus normally lacks a cell wall
A)Mycobacterium
B)Streptococcus
C)Mycoplasma
D)Bacillus

Accepted Answer

Mycoplasma is a bacterial genus that lacks a cell wall. Instead, it has a plasma membrane stabilized by sterols. This makes it unique among most prokaryotes that have a cell wall made of either peptidoglycan (as in Gram-positive or Gram-negative bacteria) or pseudomurein (as in archaea).