approximately one minute. After this‚ place the circular filter paper into each petri dish adding three seeds near the top of each dish. Using one quad for each petri dish only pour a small amount into each dish. This should be enough to dampen the filter paper but not completely soak it. Next‚ you are going to want to place the lid on each petri dish and using one piece of tape‚ tape the dish to keep it shut. Then pick up each petri dish and place them into the respective quad that you poured on the seeds
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side were far less than the amount of bacteria on my constant side. In my case‚ quantitative data can be used to support it even further as it proves that the amount of bacteria on my unaltered‚ control side of the petri dish was much more than the changed‚ experimental side of the petri dish. You could also argue that qualitative data could help support it because you can visually see the difference that the Hand Sanitizer made in killing the bacteria. Unfortunately‚ since I did not do the experiment
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soil will absorb heat faster‚ therefore ending with a higher temperature than the water. Materials • 2 petri dishes • Soil • Water • 2 thermometers • Heat lamp Procedure 1. Design lab tables. 2. Record mass of petri dish and then add enough soil to fill it to the brim. Record mass again. The difference is the mass of the soil sample. 3. Record the mass of another petri dish and fill it with water. Record the mass again. The difference is the mass of the water. 4. Place the thermometers
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Petri Dish A Petri dish (or Petri plate or cell culture dish) is a shallow glass or plastic cylindrical lidded dish that biologists use to culture cells[1] or small moss plants. Empty Petri dishes may be used to observe plant germination or small animal behavior Bunsen Burner Bunsen burner‚ is a common piece of laboratory equipment that produces a single open gas flame‚ which is used for heating‚ sterilization‚ and combustion. It is used for heating‚ sterilization‚ and combustion
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alcohol and their viability was measured. The hypothesis used was if there is more ethanol alcohol‚ then the viability of the brine shrimp is unfavorable. The brine shrimp were put into sixteen Petri dishes with the same amount of brine solution. Different amounts of ethanol alcohol were added to each Petri dish. After 168 hours‚ the brine shrimp were looked at under a microscope and some cysts became nauplii and many died. In the control dishes‚ with no alcohol‚ the viability was the lowest; the average
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temperature and to make sure it is not too hot to kill the bacteria and not too cold to prevent the solution from combining. Amount of bacteria used on each agar dish. This is to make sure that no brand of detergent is either more advantaged or disadvantaged than the other in its ability to kill the bacteria. Amount of time each agar dish spent in incubation and the temperature of the incubator. To ensure the bacteria has an equal chance of growing within the same timeframe. Materials 4 beakers
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then a beetle with more mass will have a higher pulling power. Materials Electronic balance Bess Beetle Petri dish String Pennies Table Paper Methods 1. Draw and label the beetle 2. Find and record the mass of the petri dish by using an electronic balance 3. Find and record the mass of a penny 4. Place the beetle in the petri dish 5. Find the mass of the petri dish and the beetle combined 6. Tape a long piece of paper to the table. The beetle’s legs need friction on order to
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staining of microbes. Part I. Smear Preparation in Mastering Microbiology. Log in to MM‚ go to the Study Area‚ and then to Microlab Tutor “Smear Preparation”. After viewing the short video‚ answer the following question: 1. List the major steps in smear preparation If the slide is not clean‚ clean the slide. Label the slide. Make a dime size circle Place a drop of saline solution on to the slide. Sterile the loop/or use a sterile loop and obtain culture of the bacteria from the petri dish or tube
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Protocol Materials: * Fertilized chicken eggs (Gallus gallus) * Tumor cell line (SK-ChA-1) * 70% ethanol * Paper towel * 45 Petri dishes * Incubator * Non-fertilized eggs * Rocket fuel * Marker * Scalpels * PBS-suspension * Fine forceps * Decapitation-scissors * Plastic rings 1mm diameter * 80 mm triangular magnetic stir bar * DCCP + DSPE-PEG 96:4 mmol empty liposomes suspension * DCCP + DSPE-PEG 96:4 mmol + Zn-Phthalocyanine (Lipid:PS
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used in the sandwich bar in the dining commons‚ the outer handle of the front entrance to the Upper School‚ and the microphone part of the podium. The plan was to collect samples of the bacteria with the help of a swab and transfer them to individual Petri dishes at the same time to prevent any variability in the experiment. The bacterial samples would be allowed to grow in an agar medium under the same conditions. The colonies were allowed to grow for a certain period of time before emulating their
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