Flashcards
Uncontaminated Bacteria - Growth Cultures
Cards in this deck (5)
- 1What is an uncontaminated culture of bacteria?It is a culture that only contains selected bacteria – and so is not contaminated with bacteria from anywhere else.
- 2How can bacteria be grown?Bacteria multiply by simple cell division (binary fission) as often as once every 20
minutes if they have enough nutrients and a suitable temperature.
Bacteria can be grown in a nutrient broth solution or as colonies on an agar gel
plate. - 3Why might uncontaminated clutures be needed?To test the effectiveness of an antibiotic or disinfectant.
The most effective bacteria or disinfectant is the one that kills the most bacteria.
This does not always mean it is the best one to use however as it may be harmful to health or ineffective against other bacteria. - 4What is the maximum temperature cultures should be incubated at in school and why?25 degrees C
If you use higher temperatures it increases the likelihood that harmful pathogens can grow. - 5Why can a higher temperature be used for incubation in industrial laboratories?To allow more rapid growth of bacteria
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- User has deleted their subject information Flashcards on Uncontaminated Bacteria - Growth Cultures, created by Deleted user on 22/01/2019.
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- Deleted user · Jan 2019
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- Jan 22, 2019
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- Created by Antonia Rout · Apr 22, 2017
- Copied by bill fingleton · Jan 22, 2019
- Copied by bill fingleton · Jan 22, 2019
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