True about Corynebacterium diphtheriae are all except:
**Core Concept**
Corynebacterium diphtheriae is a Gram-positive, facultative anaerobic bacterium that causes diphtheria, a severe respiratory infection. The bacterium produces a potent toxin, diphtheria toxin, which is responsible for the clinical manifestations of the disease.
**Why the Correct Answer is Right**
The correct answer is not specified, but we can infer that the question is asking for a characteristic of Corynebacterium diphtheriae that is not true. However, since the correct answer is not provided, we will analyze the options below.
**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, so we cannot evaluate its correctness.
**Option B:** Not provided, so we cannot evaluate its correctness.
**Option C:** Not provided, so we cannot evaluate its correctness.
**Option D:** Not provided, so we cannot evaluate its correctness.
**Clinical Pearl / High-Yield Fact**
Corynebacterium diphtheriae produces a toxin that inhibits protein synthesis, leading to the characteristic symptoms of diphtheria, including respiratory failure and cardiac complications. The toxin is produced in the presence of iron, which is why the bacterium can produce it in iron-rich environments.
**Correct Answer:** Not provided.