5.1.4: Exercise #26 - Lab Wrap-Up

Answer the following questions:

1. You sampled four different species in your experiment. List the organism tested and identify the temperature group to which each belongs based on your observations.
2. Serratia marcescens was grown on agar slants and incubated at two different temperatures. Describe your observations and explain what you observed.
3. Describe the difference between a psychrophile and a psychrotroph.
4. Explain why psychrotrophic organisms would be a concern for food-born illness.
5. There are number of methods in which temperature is used to control microbial growth. Describe three different ways in the home, clinical environment, or laboratory environment in which temperature is utilized for microbial control. Describe how that mechanism works and why it is important.