TRUE about mycoplasma are all, EXCEPT:
**Core Concept**
Mycoplasma are a group of bacteria that lack a cell wall, belonging to the class Mollicutes. This characteristic makes them resistant to beta-lactam antibiotics, which target cell wall synthesis.
**Why the Correct Answer is Right**
The correct answer choice is the one that does NOT apply to mycoplasma. Mycoplasma are known for their unique characteristics, including the absence of a cell wall, which contributes to their resistance to beta-lactam antibiotics. They are also capable of adhering to host cells through specific adhesins, and they can cause a range of diseases in humans, including pneumonia and urethritis.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because mycoplasma do indeed lack a cell wall, which is a defining feature of this group of bacteria.
* **Option B:** This option is incorrect because mycoplasma are obligate parasites, meaning they require a host cell to survive and replicate.
* **Option C:** This option is incorrect because mycoplasma infections are often treated with macrolides, which are a class of antibiotics that target protein synthesis.
**Clinical Pearl / High-Yield Fact**
Mycoplasma pneumoniae is a common cause of community-acquired pneumonia in adults, particularly in young adults and those with weakened immune systems. It is often associated with a mild to moderate illness, but can progress to more severe disease in some cases.
**Correct Answer: D.**