0
Petridish is a small tub made out of glass or plastic used to culture animals or plant cells in labs.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is a laboratory evaporating dish?
Petridish
Can UV rays penetrate glass of petridish?
UV rays can penetrate glass of petridish. Even on a cloudy day sun's UV rays still reach earth's surface.
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
What is the use of the petridish?
mainly as a growth medium for molecular organisms. such as bacteria, fungi, and single celled organisms
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.
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
What are the different kind of biological tools?
Biological Tools and its function1. Magnifying Glass - it is used to produce a magnified image of an object2. Petri Dish - it is used for holding a culture medium upon which cells, bacteria and viruses can be grown and studied3. cover slip - it is a protector that goes over tissues with mounting media, this keeps the tissue on the slide from degrading4. thermometer - it is used for measuring temperature or temperature gradient using a variety of different principles5. test tube - it is used by chemists to hold, mix or heat small quantities of solid or liquid chemicals, especially for qualitative and experiment and essays6. microscope - it is used for viewing objects that are too small to be seen by the naked eyes7. funnel - it is used to channel liquid or fine-grained substances into containers with a small opening8. dissecting pan - it is a pan where you dissect organisms so the organs or fluid wont spread away.9. glass slide - it is used to place an item on and put it under a microscope to view10. medicine dropper - it is used to measure small amount of liquids usually in milligrams11. dissecting scissors - it is used for slicing a specimen during dissection12. forceps - it is used for grasping, manipulating or extracting, especially such an instrument used by a surgeon13. scalpel - it is a fixed blade used in surgery and dissection14. beaker - it is used as a laboratory container and mixing jar15. test tube rack - it is used to hold the test tube so the solution/substance in it wont spread away16. dissecting pin - it is used to hold open the specimen that you're dissecting17. meter stick - its a stick that is 100 centimeters long, roughly 39 inches. Generally used to measure distance.18. Bunsen burner - it is commonly used in scientific laboratories, consisting essentially of a hollow tube which is fitted vertically around the flame and which has an opening at the base to admit air.19. graduated cylinder - is a piece of laboratory equipment used to accurately measure out volumes of objects for use in labs.20. triple-bean balance - it is used to find the mass of an object21. safety goggles - it is used as protection of eye from dust, flying debris, chemical splashes, etc.22. pipette - A piece of laboratory glassware, shaped like a thin tube with a bulge in the middle, that allows better accuracy when measuring certain volumes (hence the range of sizes) e.g. when making solutions or samples for titration.23. probe - its a slender surgical instrument for exploring the depth or direction of a wound, sinus, or the like.24. safety mask - its a mask used when doing experiment, dissection or surgery to protect us from poisonous gasses, viruses and dusts.
