BIOLOGICAL CLASSIFICATION
KINGDOM MONERA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Broth water in a tightly closed test tube is heated at 600C. After one week bacteria appeared, the bacteria came from ____
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Air
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Broth
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Bacterial spores
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Meat
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Boiled water
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Explanation:
Detailed explanation-1: -1 Answer. Hold the test tube at an angle. Point the test tube away from yourself and all other people. Heat the test tube gently from the top of the substance being heated, and always wear safety googles.
Detailed explanation-2: -Video. Move the test tube in and out of the flame to allow time for heat transfer. Move the test tube out of the flame every few seconds to allow heat to pass from the glass to the solution. This is particularly important in preventing boil-over.
There is 1 question to complete.