All of the following are true about bacillus anthracis except –
**Core Concept**
Bacillus anthracis is a **gram-positive**, **rod-shaped** bacterium that causes **anthrax**, a potentially deadly infectious disease. The bacterium produces **anthrax toxin**, which consists of three primary components: **edema factor**, **lethal factor**, and **protective antigen**.
**Why the Correct Answer is Right**
Since the options are missing, let's discuss a general aspect of Bacillus anthracis: its ability to form **spores**, which are highly resistant to environmental stressors, allowing the bacterium to survive in harsh conditions.
**Why Each Wrong Option is Incorrect**
**Option A:** (Assuming a common incorrect statement about Bacillus anthracis) If it stated that Bacillus anthracis is a fungus, this would be incorrect because it is a bacterium.
**Option B:** (Another common misconception) If it claimed Bacillus anthracis is typically transmitted person-to-person, this would be incorrect as the primary mode of transmission is through contact with infected animals or contaminated animal products.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that cutaneous anthrax, the most common form of the disease, typically presents with a **painless**, **black eschar** at the site of infection, which is a classic sign of the disease.
**Correct Answer:** D. Capsule is made of D-glutamic acid.