🏥 USMLE Exam Prep

A patient develops severe flaccid paralysis after consuming improperly canned food. The causative agent produces a neurotoxin that inhibits acetylcholine release at the neuromuscular junction. Which bacterium is responsible for this condition?

A Clostridium tetani
B Clostridium botulinum
C Staphylococcus aureus
D Streptococcus pyogenes

✓ Correct Answer: Option B

Clostridium botulinum produces botulinum toxin, which cleaves SNARE proteins, preventing acetylcholine release at the neuromuscular junction and causing flaccid paralysis. Clostridium tetani produces tetanus toxin, causing spastic paralysis.

💡 Why is B) the correct answer?

The correct answer to the question "A patient develops severe flaccid paralysis after consuming improperly canned food. The causative agent produces a neurotoxin that inhibits acetylcholine release at the neuromuscular junction. Which bacterium is responsible for this condition?" is Option B: Clostridium botulinum.

The other options — A) Clostridium tetani, C) Staphylococcus aureus, D) Streptococcus pyogenes — are incorrect for this USMLE Exam Prep question. As explained above: Clostridium botulinum produces botulinum toxin, which cleaves SNARE proteins, preventing acetylcholine release at the neuromuscular junction and causing flaccid paralysis. Clostridium tetani produces…

📚 About This USMLE Exam Prep Practice Question

This 2-level USMLE Exam Prep question from the Step 1 – Basic Sciences topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free USMLE Exam Prep practice test or use flashcards for spaced repetition review.

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