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Questions and Answers
What is the purpose of heating the inoculating loop until red and then cooling it down?
What is the purpose of heating the inoculating loop until red and then cooling it down?
- To mix the agar with distilled water
- To observe the bacteria under the microscope
- To sterilize the loop (correct)
- To prepare the sample for streak plating
What is the ratio of agar powder to distilled water for making agar?
What is the ratio of agar powder to distilled water for making agar?
- 8.6g/300mL (correct)
- 5g/100mL
- 1g/10mL
- 28g/L
What is the purpose of pouring the agar mixture into a petri dish while placing the lid of the flask and petri dish above the alcohol lamp?
What is the purpose of pouring the agar mixture into a petri dish while placing the lid of the flask and petri dish above the alcohol lamp?
- To prevent contamination (correct)
- To mix the agar with distilled water
- To observe the sample under the microscope
- To incubate the sample
What is the purpose of smearing the sample onto the sterile petri dish?
What is the purpose of smearing the sample onto the sterile petri dish?
What is the purpose of boiling the hay or grass until it smells like tea?
What is the purpose of boiling the hay or grass until it smells like tea?
What is the purpose of adding iodine in the gram staining procedure?
What is the purpose of adding iodine in the gram staining procedure?
To make agar, mix ______ grams of agar powder with 1 liter of distilled water.
To make agar, mix ______ grams of agar powder with 1 liter of distilled water.
Before pouring the agar mixture into a petri dish, cool it down to ______ temperature.
Before pouring the agar mixture into a petri dish, cool it down to ______ temperature.
In the streak plate method, use a ______ stick to pick up any sample from the environment.
In the streak plate method, use a ______ stick to pick up any sample from the environment.
Heat the ______ loop until it turns red and then cool it down before use.
Heat the ______ loop until it turns red and then cool it down before use.
In the gram staining procedure, add ______ Violet to the sample for 30 seconds.
In the gram staining procedure, add ______ Violet to the sample for 30 seconds.
After pouring the agar mixture into a petri dish, put it in the ______ to sterilize it.
After pouring the agar mixture into a petri dish, put it in the ______ to sterilize it.
In the hay infusion method, use ______ water to make the infusion.
In the hay infusion method, use ______ water to make the infusion.
To make hay infusion, boil the hay or grass until it smells like ______.
To make hay infusion, boil the hay or grass until it smells like ______.
Use a ______ to scrape the bacteria from the petri dish in the gram staining procedure.
Use a ______ to scrape the bacteria from the petri dish in the gram staining procedure.
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