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Questions and Answers
How are spore-forming microorganisms preserved on sterile filter paper?
How are spore-forming microorganisms preserved on sterile filter paper?
- By soaking the filter paper in a broth culture, placing it in a tube, evacuating and sealing it
- By placing drops of broth containing the spores on sterile filter paper and drying in a low temperature oven or dessicator (correct)
- By autoclaving the filter paper and then inoculating it with a broth or agar culture
- By storing the filter paper in closed containers containing desiccants
What is the method used for preserving in a dry state by using dry sterile soil?
What is the method used for preserving in a dry state by using dry sterile soil?
- Soaking the soil in a broth culture and storing it in closed containers containing desiccants
- Placing the dry soil in a tube, evacuating and sealing it
- Sterilizing the dry soil by autoclaving and then inoculating it with a broth or agar culture (correct)
- Inoculating the dry soil with a broth or agar culture
How are industrial organisms preserved in culture collections?
How are industrial organisms preserved in culture collections?
- By autoclaving and then inoculating with a broth or agar culture
- By storing in a low temperature oven or dessicator
- By drying at 25°C and storing in closed containers containing desiccants (correct)
- By soaking in a broth culture and storing in sterile screw caps bottles
What is the alternative method for preserving spore-forming microorganisms on sterile filter paper?
What is the alternative method for preserving spore-forming microorganisms on sterile filter paper?
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What is the process for preserving sterile filter paper soaked in a broth culture?
What is the process for preserving sterile filter paper soaked in a broth culture?
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