The bacterium (Clostridium botulinum) that causes botulism is :
Correct answer: C. An obligate anaerobe
- A. An obligate aerobe
- B. A facultative anaerobe
- C. An obligate anaerobe
Explanation
Clostridium is a genus of gram-positive bacteria. They are obligate anaerobes capable of producing endospores.Individual cells are rod-shaped. Foodborne disease caused by C. botulinum is referred to as botulism (a muscle-paralyzing disease). It is caused by the ingestion of a neurotoxin (botulin) produced by the microorganism in the food. Botulin blocks nerve function, leading to respiratory and musculoskeletal paralysis. Symptoms of botulism include weakness, fatigue, and dizziness, followed by blurred vision and progressive difficulty in speaking and swallowing. Weakening of the respiratory muscles is also observed, and death may occur due to respiratory failure.
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Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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