In reference to the mycoplasmas, the following are true except –
**Core Concept**
Mycoplasmas are a group of bacteria that lack a cell wall, making them resistant to beta-lactam antibiotics like penicillins and cephalosporins. They are obligate parasites that require a host cell for replication and have a unique cell membrane structure.
**Why the Correct Answer is Right**
Mycoplasmas have a cell membrane composed of a single lipid bilayer, which lacks a cell wall and peptidoglycan. This characteristic makes them resistant to beta-lactam antibiotics. Additionally, mycoplasmas have a small genome size and lack many cellular components, including a cell wall, teichoic acids, and lipopolysaccharides. They require a host cell for replication and energy production.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.
**Option D:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
Mycoplasmas are often associated with respiratory tract infections, such as pneumonia and bronchitis, as well as sexually transmitted infections like urethritis and cervicitis. They can also cause infections in immunocompromised patients, such as those with HIV/AIDS.
**Correct Answer:** .