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Questions and Answers
Why are solid agar-based media commonly used in laboratories for growing bacteria?
Why are solid agar-based media commonly used in laboratories for growing bacteria?
- To prevent bacteria from reproducing indefinitely
- To measure growth accurately
- To make it easy to transfer cultures
- To identify colonial characteristics and isolate pure cultures (correct)
What characteristic of growth in stirred liquid media makes cultures easy to divide and transfer?
What characteristic of growth in stirred liquid media makes cultures easy to divide and transfer?
- Enhanced bacterial motility
- Decreased nutrient levels
- Even cell suspension (correct)
- Increased reproduction rate
Why is isolating single bacteria from liquid media difficult?
Why is isolating single bacteria from liquid media difficult?
- Bacteria form biofilms in liquid media
- Bacteria grow too slowly in liquid media
- Bacteria reproduce indefinitely in liquid media
- Bacteria are not easily distinguishable in liquid media (correct)
How can the use of selective media assist in identifying specific organisms?
How can the use of selective media assist in identifying specific organisms?
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What type of environmental moisture is optimum for cultivating bacteria?
What type of environmental moisture is optimum for cultivating bacteria?
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At what temperature is the cultivation of bacteria of medical importance most optimal?
At what temperature is the cultivation of bacteria of medical importance most optimal?
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Why is it important to use high levels of nutrients in laboratory techniques for growing bacteria?
Why is it important to use high levels of nutrients in laboratory techniques for growing bacteria?
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Why do saprophytic bacteria have the ability to grow at lower temperatures?
Why do saprophytic bacteria have the ability to grow at lower temperatures?
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