Petri dish

acnes) bacteria from various spots around our face, we then grabbed a Petri dish filled only with a thin layer of agar. We proceeded to swab the P. acnes bacteria off of the cotton swab (gently to not break the agar) into the Petri dish. Once we had completed swabbing the P. acnes over the agar we closed the Petri dish, taped over the dish and then wrote our initials on the dish and handed both to Mr.Breines who then put the Petri dishes into an…

Results Changes in fungal development with the addition of Jik, Handy Andy, Mr Muscle Petri dish A Petri dish B Petri dish C Petri dish D 12 hours no change No distinct change No distinct change No distinct change 24 hours No change Slight decrease Slight decrease Slight decrease 36 hours No change Green coloration decreases Green colouration decreases No…

how dirty it really was. If the isopropyl alcohol really worked, then most of the bacteria would be removed from the mouse. The materials I used for this experiment were a Isopropyl alcohol wipe, swab, petri dish, and a gel-like substance in the petri-dish. First, I divided the gel in the petri dish in…

● In this experiment, my lab partner and I wanted to examine the taxis of planarians. Taxis is an innate behavior behavioral response by an organism to a stimulus where an organism moves either towards the positive taxis or away from negative the taxis of the stimulus. There are different types of taxis which include chemotaxis, hydrotaxis, phototaxis, chemotaxis, and thigmotaxis. Phototaxis is a behavior in which the organisms show a spatial relationship to a source of stimulation, even…

Wash hands and spray down or wipe your work are with disinfectant. Dry off with paper towels. Label the bottom of your agar plate (petri dish) as diagrammed in your Experimental Design (note: the bottom of the plate contains the nutrient agar, which looks like a clear/beige gelatinous material). Determine your two sources of collection for bacteria specimens. When you have decided, write…

soaked in dish soap?” The hypothesis was that food coloring would move toward the toothpick faster in whole milk than in buttermilk. The prediction was that if food coloring was added to whole milk, then it would move toward the toothpick faster than it would in buttermilk. The independent variable was the type of milk, while the dependent variable was the time food coloring took to move toward the toothpick. For the procedure, first fill one petri dish with whole milk and one petri dish with…

Instead of partitioning into separate colonies, like the bacteria in figure one, the bacterial in figure three have dispersed throughout the entire petri dish and created an indistinguishable flat lawn of bacteria. Figure 4, Figure # 4: LB/amp: + PGLO, exhibited growth much like the bacteria in figure one. The only difference I noticed was that there were about two third the amount of colonies, with…

experimental design with four petri dishes that each represented a different environment. The control treatment was the dish with just dirt while the other habitats included rocks, wood, then dead leaves. All the sow bugs started out in the control treatment and was monitored meticulously for thirty mins. The major result from this study was that these bugs have no preference of habitat. Trends in the data revealed that the bugs typically spent the most time in the leaf and controlled dish.…

water back in, the reaction of aluminum with the copper chloride hydrate to produce solid copper, and the weight of this copper. To accomplish this, a petri dish was weighed and 1.01 g of copper chloride hydrate was added to the dish. The solid salt crystals were broken up to make sure that all of the hydrate would be heated the same. Next, the petri dish and hydrate were heated upon a hot plate for roughly 15 minutes, until all the salt crystals were brown instead of blue. This indicated that…

10cm petri dish. 2. Cut Paper Towels to the shape of the petri dishes so they will be able to lay flat when covering the seeds. 3. Starting with the control, measure 10ml of distilled water. The control will have no motor oil so the ratio of water to motor oil will be 10:0. 4. Add to one of the 5 petri dishes; label the petri dish with the ratio. 5. Put on safety equipment (gloves and goggles) before opening the motor oil. 6. Measure 8ml of water and 2ml of motor oil for the next petri dish,…