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What is a petridish?
Petridish is a small tub made out of glass or plastic used to culture animals or plant cells in labs.
What is a laboratory evaporating dish?
Petridish
If two strips of potato was placed in a petridish of water what would be the result if one was boiled before been placed in petridish with water?
It would actually have more of the natural flavor.
With what do you swab bacteria onto a petri dish?
We can not swab bacteria directly on to a petridish its because swab's front part contain cotton which may damage the evenness of the agar in petridish so its better to draw the bacteria from swab to a broth after 24 hours if it is innoculated on to petridish with sterile loop we can grow the bacteria
Can UV rays penetrate glass of petridish?
Yes, UV rays can penetrate glass, but the amount of UV radiation that passes through glass may depend on the type and thickness of the glass. It is generally recommended to use special UV-transmitting glass if working with UV-sensitive materials in a laboratory setting.
What is the biological indicator to check the efficiency of autoclave?
Hi We can check the autoclave efficiency biologically by culturing MOs(eg.E.coli) on petridish and put it for 15-20min in the autoclave. Aftet that , we take the petridish and put it in the incubator,we can see it after 24h , if there is no growth of culture that means the autoclave is efficient. to make more sure, we take another plate & made a culture from the same source , then we incubate it directly .. if there is a growth of bacteria that mean this bacteria ia alive & the autoclave in the first time make good sterilization & killed them.
What does the organization Petridish promote?
Petridish is an organization that allows people to fund promising scientific research projects of their own choosing, and allows them to take a bigger role in the scientific community. The projects can range from world known scientists to lesser known individuals in the field of science, who are looking for help in the funding of their research. Each project will have a minimum amount to meet otherwise the project will not be funded and focus will shift to more popular research. Contributors to successful projects can receive early access to the findings, souvenirs from the project, acknowledgement in scientific journals,naming rights to discoveries, and even the ability to join an expedition in person.
What is purpose of petridish?
A petri dish is a shallow, flat, cylindrical container used in laboratories to culture cells or small organisms under controlled conditions. It provides a sterile environment for cell growth and is essential for studying microorganisms, conducting experiments, and observing the results of biological processes in a controlled setting.
Why we put the inverted petridish in the incubater after streaking?
Placing the inverted Petri dish in the incubator after streaking helps prevent contamination from condensation dripping onto the streaked agar surface. It also helps to maintain a sterile environment by protecting the surface of the agar from airborne contaminants that may settle on it during incubation.
Who is the scientist that discovered the law of evaporation?
When a liquid is placed in an open vessel, it slowly escapes into gas phase, eventually leaving the vessel empty. This phenomenon is known as evaporation. Evaporationof liquids can be explained in terms of kinetic molecular model. Although there are strong inter-molecular attractive forces which hold molecules of a liquid together, the molecules having sufficient kinetic energy can escape into gas phase if such molecules happen to come near the surface. In a sample of liquid all the molecules do not have same kinetic energy. There is a small fraction of molecules which have enough kinetic energy to overcome the attractive forces and escape into gas phase. Evaporation causes cooling. This is due to the reason that the molecules, which undergo evaporation, are high-energy molecules; therefore the kinetic energy of molecules which are left behind is less. Since the remaining molecules have lower average kinetic energy therefore, temperature must be lower. If the temperature is kept constant the remaining liquid will have the same distribution of molecular kinetic energies and the high-energy molecule will keep on escaping from the liquid into the gas phase. If the liquid is taken in an open vessel, evaporation will continue until whole of the liquid evaporates.* Three petridishes of diameter 10 cm with covers * 10 ml pipette * Stop watch * Acetone * Benzene * Chloroform * Clean and dry the petridishes and mark them as A, B, C. * Pipette out 10 ml of acetone to petridish A and cover it. * Pipette out 10 ml of benzene in petridish B and cover it. * Pipette out 10 ml of chloroform in petridish C and cover it. * Uncover all the three petridishes simultaneously and start the stop-watch. * Note the respective time when the liquids evaporate completely from each petridish. Petridish MarkLiquid TakenTime taken for complete evaporation A Acetone 53 min B Benzene 42 min C Chloroform 30 min The rate of evaporation of the given three liquids is in the order: Chloroform > Benzene > Acetone
When to use me and you or you and i?
If you would use 'I' in the singular, then use 'you and I'. If you would use 'me', then use 'you and me'.
What do you use to work out equations on excel?
You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.You use the formulas and functions.
