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Questions and Answers
What does the thermal death point (TDP) of a microorganism refer to?
What does the thermal death point (TDP) of a microorganism refer to?
- The temperature at which a microorganism multiplies fastest
- The lowest temperature at which all microbes are killed in a 10-minute exposure (correct)
- The highest temperature a microorganism can survive
- The temperature at which a microorganism becomes dormant
Why is boiling less effective at killing endospores?
Why is boiling less effective at killing endospores?
- Endospores can survive up to boiling temperatures (correct)
- Endospores require a higher temperature to denature proteins
- Endospores are immune to heat
- Boiling increases the reproduction rate of endospores
What is the purpose of the thermal death time (TDT)?
What is the purpose of the thermal death time (TDT)?
- To measure the time it takes for a microorganism to multiply at a given temperature
- To determine the length of time needed to kill all microorganisms in a sample at a given temperature (correct)
- To establish the time it takes for a microorganism to become dormant at a certain temperature
- To calculate the time it takes for a microorganism to adapt to a new temperature
