Which of the following organisms is most resistant to sterilization methods?

Practice Questions

Q1
Which of the following organisms is most resistant to sterilization methods?
  1. Escherichia coli
  2. Streptococcus pneumoniae
  3. Bacillus anthracis spores
  4. HIV

Questions & Step-by-Step Solutions

Which of the following organisms is most resistant to sterilization methods?
  • Step 1: Understand what sterilization methods are. These are processes used to eliminate all forms of life, including bacteria and spores.
  • Step 2: Learn about different organisms and their resistance to these methods. Some organisms are tougher to kill than others.
  • Step 3: Identify Bacillus anthracis, which is known for producing spores that can survive extreme conditions.
  • Step 4: Recognize that spores of Bacillus anthracis are particularly resistant to heat, chemicals, and radiation, making them hard to sterilize.
  • Step 5: Conclude that Bacillus anthracis spores are a major concern in sterilization because of their high resistance.
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