Unknown Bacterium #22 Purpose The purpose of this experiment was to find the identity two unknown bacteria in the given test tube. Materials •Bacterial Loop •Bunsen Burner • Petri Dish with agar •Crystal Violet •Gram’s Iodine •95% Ethanol •Safrin •Glass Slides •Microscope •Unknown bacteria in test tube Procedure On the first day‚ one plate was streaked qualitatively and left it in the
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1.20 Unguided Experiment – Response of plants towards light . Subtopik : 1.9 Memahami rangsangan dan tindak balas . Hasil P&P : Menyatakan rangsangan yang menyababkan gerak balas tumbuhan‚ mengenal pasti bahagian tumbuhan yang peka terhadap rangsangan tertentu dan menghubung kait gerak balas tumbuhan dengan kemandiriannya .
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then there will be a difference in the pigments present between each Drosophila. Procedures: The equipment that is needed to conduct this experiment is a 15x20 cm rectangle of Whatman No. 1 filter paper‚ an etherizer‚ ether‚ a vial of fruit flies‚ petri dishes‚ a razor blade‚ a glass rod‚ a dissecting microscope‚ a 1000 ml jar‚ aluminum foil‚ solvent‚ and a UV light. What needs to be done first in the experiment is that predictions need to be made on the effect of the enzyme mutations on the concentration
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An agar plate is a Petri dish that contains a combination of agar and nutrients that help microorganisms grow. The proper method of setting microorganisms on an agar plate is know as “streaking”. In order to streak‚ the microorganisms are placed on a sterile swab or metal wire
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micropipette and squirt it into a concave slide‚ embryonic dish or watch glass half-filled with Bouin’s fixative. NOTE. A live counting usually takes a long time‚ because it requires the pre-identification of certain species in a living state under high magnification of a microscope. To prevent the fixative fluid from drying or crystallising‚ hold the concave slide in a Petri dish with moist filter paper on the bottom‚ or cover embryonic dish with a
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fruit in different levels of maturity b) distillation apparatus c) beakers d) petri dish e) refrigerator (for preservation of samples) f) mortar and pestle g) thermometer 2) for preperation and treatment of cancer cells a) sample of blood with HPV related neoplasms‚ 5ml per sample b) sample of normal blood‚ 5ml per sample c) centrifuge d) test tubes e) petri dish f) dropper g) refrigerator (for preservation of samples) h) compound microscope
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Bacteria Purpose; the purpose of this lab was to see how much bacteria would grow on our variables we chose to use. Hypothesis; The dirtier the variable‚ the more bacteria will grow over time. Materials; 6 Petri dishes Cotton Swabs (Q-tips) Procedure; we started with 6 different Petri dishes that had a sticky yellow-ish substance layered on the bottom. Then‚ we picked out the variables we were going to use to rub onto the yellow substance. Lastly‚ we put soap on one Q-tip‚ rubbed a Q-tip on
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three common bactericidal agents‚ bleach‚ hydrogen peroxide‚ and isopropyl alcohol‚ were tested. This was done by creating aqueous solutions of staphylococcus epidermidis bacteria and a chemical agent. The solutions were then incubated on an agar petri dish for 24 hours. The quantity of staphylococcus epidermidis bacteria colonies that were grown were used as an indicator of how effective each agent was in killing the bacteria. Each bactericidal agent has its own mechanism for killing bacteria. Both
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allow it to sit for another 12-15 days. 7. After 12-15 days have passed‚ record the sex and phenotype of all adult flies. As described in steps 1-3 Flynap will be used to anesthetize the flies before they are removed from the vials to be put into petri dishes for counting. Once all of the flies have been counted and recorded‚ place them into the “morgue” and dispose of all
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November ‚2012 ABSTRACT This practical was regarding microorganisms in the environment as we know microorganisms are everywhere ‚this session was divided in three parts where in part A of the practical we planted microorganisms on different petri dishes in order to verify if the microorganisms are really everywhere The necessity and value of collecting‚ identifying‚ and analyzing the various microbes regularly encountered in the daily human environment becomes quite apparent .when one gains
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