Question

Which of the following is an example of how some bacteria are NOT helpful?

• A. Some bacteria decompose dead organisms.
• B. Some bacteria recycle nutrients needed for the survival of living things.
• C. Some bacteria live in your digestive system.
• D. Some bacteria produce tetanus.

Answer 1

The correct option is D Some bacteria produce tetanus.

Tetanus is caused by an infection with the bacterium Clostridium tetani which is commonly found in soil, dust and manure. The bacteria generally enter through a break in the skin such as a cut or puncture wound by a contaminated object.They produce toxins that interfere with muscle contractions, resulting in the typical symptoms.Diagnosis is based on the presenting signs and symptoms. The disease does not spread between people.