4. At the conclusion of experiments involving growing bacterial cultures, should be added to the plates or tubes and everything should be soaked for .

Disinfectants should be added to the plates or tube and everything should be soaked for 4–10 minutes.

Explanation:

Disinfectants are suitable in the destruction of bacteria microorganisms on a motionless surface. Disinfectants are commonly used in hospitals and other places which human beings have great contact with.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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