Petri dish Essays

swab and a petri dish and searching for a collection site in the Biology Department that would have bacteria. The unknown sample was collected at a recycling bin in Biology Building East. We swabbed the recycling bin using the sterile cotton swab and gently streaked the swab across the surface of the petri dish and immediately covered it with the lid. The petri dish was then placed in an incubator at 37C for two days. Two other petri dishes were obtained air and skin. The air petri dish lid was left

from the entire semester while in the lab and apply it to be able to identify an unknown genus and species gram positive bacteria. Each student was given a petri dish with an unknown Gram positive bacterium inside. The petri dish with the unknown gram positive bacteria that was used in my experiment was #8. The possible bacteria inside my petri dish could be any of the following: Bacillus subtilis, Bacillus cereus, Mycobacterium species, Corynebacterium species, Lactobacillus, Staphylococcus aureus

safe to say that if the dish contained the pGLO plasmid, the E. Coli growed. If there was no pGLO in the dish, then the only way E. Coli could grow is if it did not contain ampicillin which is the antibiotic. The only way that the E. Coli could grow is if the dish contained ampicillin and arabinose. Since arabinose is essentially and key that turns on the fluorescent glowing, it is essential to have in order to make the bacteria glow. Since no pGLO was present in one dish and ampicillin was also

Chemistry Exploration Topic: determining the activation energy of a chemical reaction Research Question: What effect does temperature of the chemical reaction have on the activation energy ? ICT: Microsoft Word Autograph Microsoft Excel Introduction This experiment is designed to help in estimating the activation energy of the rate-limiting step in the acid catalyzed reaction of acetone with iodine. This is achieved by measuring the reaction rates at different reaction temperatures over

The creation of the master plate was made up of specially selected bacteria from both experiment 3.2 and 4.1, the goal was to achieve a diverse selection of bacteria to observe closely at its texture, color, shaper, and margins. When selecting specific bacteria, I looked for the best combination of variation and choosing across all five of my plates for both agars. Through using morphological observation I was able to determine different bacteria such as colonies that are irregular and circular continuing

E. Discussion: In order to synthesize the polymer, Nylon 6,10, we had to complete a few steps to create the chemical reaction that combined sebacoyl chloride and hexamethylenediamine. First we measured the mass of the two graduated cylinders when they were empty, and measured it again after they were filled with sebacoyl chloride and hexamethylenediamine. We did this in order to find the measurements of the reactants. When we measured the graduated cylinder when they were emptied, one weighed at

When any two of the competitors face off, one outcompetes the other. However, when all three competitors are in play, they all survive. This same type of competition can be observed between organisms in an ecosystem and even microorganisms in a petri dish. This experiment was carried out to observe the effect of Gram positive

Note: Petri dishes are always kept with the “gel side (agar)” up. 2. Using a permanent marker, on the top (gel side), divide the petri dish into quarters and label each quarter A, B,C, D, 3. Make a label and put on the bottom of the petri dish: • Name • Date 4. With your partner, decide what four cultures you would like to study (i.e., cell phone, table top, door handle, etc) 5. In your notebooks document what quarter of the petri dish contains which culture: Example: A

A blaring alarm sounds and a young woman sighs. Her morning begins slowly; she drags herself around the bedroom. plucks her uniform off a hanger, and drudges to the washroom to brush her teeth. She leaves herself plenty of time to organize and compose herself before she drives to work at a nearby Starbucks. Upon arrival, she offers a cheerful greeting to her coworkers, which they return. Before she orders herself a drink, she hangs her green apron on a hook in the backdoor and places her

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Once Was Never, Now is Forever Parody of Little Miss Muffet Once upon a time, across the rolling hills of Deming Washington, in the far off shady woods lived a lanky, bright eyed, long chocolate haired young girl named Little Miss Muffet. She had built herself a beautiful tree house where she hoped no one could find her. She was escaping her crazy house of 8 siblings, where she was ignored. Miss Muffet decided that she was better off in the deep woods of about 184,657 trees (she often

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germination of D. carota seeds depending on soil conditions, such as having one petri dish in the light and one petri dish in the light, and to see which petri dish would have better germination. Materials and Methods

on our LB/amp plus DNA petri dish we had a lawn of bacteria and the color was almost clear. Our results for this petri dish mean that the bacteria was not killed by the ampicillin. Next, in the LB/amp minus DNA petri dish we observed very minimal amounts of growth. These results mean that we correctly followed the procedures because this petri dish was not supposed to have growth due to the ampicillin. Our last petri dish was minus DNA and lysogeny broth, in this petri dish we saw 7 colonies of bacteria

Abstract What type of bacteria or fungi or found on hands. There are ways to find out what lives on your hand one is taking a swab form your hand and put it on a petri dish allow thing to grew. This lab we found mainly yeast as for the fungi petri dish and for bacteria there was Staphylococcus epidermidis on the hand. So, after doing all of this we learned that there are many things living on your hand and that most of them are harmful. The thing that we found are commonly found in every hand and

and the petri dish lid was opened. The control disk is placed in the middle of the petri dish, an equal distance from each side of the dish. The petri dish lid was replaced and the forceps were re-sterilized. Penicillin was picked up from the container and placed an equal distance from the control disk and the side of the petri dish. Any antibiotic disks that were dropped were recorded. The steps were repeated for Ampicillin, Tetracycline, Chloramphenicol, and Streptomycin in both petri dishes. Each

all the planaria died with each experiment that I decided to do. I decided to put 10 drops and 20 drops of Powerade into a petri dish with 10 planaria in each petri dish along with 40 mL of spring water. With the results given it appeared that it was too much Powerade so, I decided to reduce the amount of dosage given with Powerade and only give them 1 drop in each petri dish. When doing that I received the data and it appeared that all the planaria had died once again. After going through the

plant stem. We stored the solution and gave it a week’s time before coming back. When returning, we took a sample from our petri dish and observed it again under a microscope. Ciliates were the first organism we found in our sample. They dominated the sample. My group and I also saw a moderate amount of rotifers, colpoda, and vorticella in our sample. We then took our petri dish with the rest of our sample and let it dry out

Where the auxin: cytokinin ratio for this media wasn’t high or low, it was more a moderate ratio. Having a moderate auxin to cytokinin concentration we should expect our explants to form callus. Looking back at Figure 3 the explants in Petri Dish C did produce a small amount of callus. However, these explants also produced a few small shoots and a number of root meristems. One possible explanation for the formation of root meristems; could be even though, the Auxin: Cytokinin ratio was rather