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How do you prevent contaminating a specimen with extraneous micoorganisms?
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Why grains are stored in dry and well ventilated room?
Mainly to prevent mould from contaminating the grain.
What is the use of tongs in baking?
They are used to pick up hot objects to prevent burns. In shops they are sometimes provided so people can serve baked goods without contaminating them by handling directly.
In pasteur's What was the function of the curved neck on the flask was to prevent?
the curved neck on the flask was to prevent trapped germs in the air from contaminating the broth. The germs accumulated in the curved neck,­ preventing germs from reaching the broth, unlike the straight neck the curved neck never changed color or became cloudy after several weeks. Concluding that "germs come from other germs".
Will oil hurt plants?
oil will prevent proper growth of the root system which will stop plant growth and may even kill it. It will also poison the plant. As well as contaminating the plant by adding harmful chemicals that animals and humans eat, which could harm them too.
Can the electron microscope be used to study a live specimen and why?
Not really. An electron microscope requires that the specimen be placed in a vacuum for viewing. It would most certainly kill any living creature placed inside it. No, the specimen being viewed is incapible of life after being placed into the slit.
How can you prevent housefly from spreading diseases?
We can cover our food to prevent the housefly from landing on the food and contaminating the food.
What will prevent you from contaminating another students sample?
Using weighing paper to measure solids
What actions will prevent you from contaminating another student's sample?
Using weighing paper to measure solids
Why grains are stored in dry and well ventilated room?
Mainly to prevent mould from contaminating the grain.
With regard to gene pollution there is never going to be a big enough gap to prevent genes spreading and contaminating non GM crops. How would you prevent this from contaminating everything.?
The concept of "gene pollution" in the study of genetically modified organisms is generally not recognized by major agricultural universities or USA governmental oversight agencies.
Why the specimen should be dried before positioning and mounting?
Because it will change shape as it dries, so mounting it while it is wet would cause excessive stresses.
What are latex gloves used for in science?
Latex gloves protect the skin of the hands from potentially harmful substances or organisms and help prevent the hands from contaminating materials.
What is worn on the face of a doctor or a nurse during an operation?
A surgical mask. It's worn to prevent germs from the doctor/nurse from contaminating the patient as well as the other way around.
What is the purpose of flaming in the aseptic technique?
to warm the tube and create warm air convection currents up and away from the opening, to prevent the entrance of dust particles upon which contaminating bacteria reside.
What is the use of tongs in baking?
They are used to pick up hot objects to prevent burns. In shops they are sometimes provided so people can serve baked goods without contaminating them by handling directly.
Can you mix kerosene with home heating oil without harm to furnace or contaminating home heating oil?
Yes, in cold climates, kerosene is mixed at 10-20% with #2 FO to prevent gelling.
What is the purpose of flaming the loop after use?
I'm assuming you mean an "innoculating loop" in microbiology. You flame the loop to kill the microoganisms on the loop before using it again to prevent mixing different bacterial colonies and contaminating them.
