Petri dish

Introduction: Bacteria create an enormous domain of prokaryote microorganisms that are diverse and abundant in most habitats on Earth. In fact, bacterial cells drastically outnumber somatic cells just on the external part of the human body compared to somatic cells within the whole body of a single individual. Bacteria are found just about anywhere on earth and are usually alongside other microorganisms including: mold spores or yeast cells, creating some difficulty when trying to distinguish…

Introduction How can creatures that don’t have eyes, and ears tell if a predator is nearby? We will be looking in depth into the predation of Periwinkles (Littoraria irrorata) and the blue crab (Callinectes sapidus). What are periwinkles? Whats the reaction and relationship between the two species. How can one species detect the other? Once we explore the our creatures we will then conduct an experiment to test if there are any notable difference in the reactions of the periwinkles in the…

The purpose of this experiment is to quantify the air quality and emissions of a local Nacogdoches Tadarida brasiliensis, Brazilian Free-Tailed bat colony. Concentration of ammonia, particulate matter, fungi and bacteria were measured to assess air quality. The guano at the base of the garage was also analyzed for nitrogen and carbon content. The colony briefly lived in the north end of parking garage on East College Street and Raguet Avenue until its untimely removal. The colony could be seen…

First, we had to observe the candle before it was lit. This was done to see how it changes after it is lit. 2. Second, we had to light the candle. The candle was stored inside of the petri dish with aluminum foil inside of it. 3. Then, we observed the lit candle. We had to watch the candle burn for a couple of minutes. We had to see how the candle has changed from before it was burnt to this point. 4. Then, we had to acquire a 250-mL…

micro tubes and Petri dishes; the meaning of those are that the “+” means bacteria will spread on the plate, while the “-“ means that no bacteria will be spread on the plate. Ampicillin is an antibiotic.…

Introduction Brine shrimp are creatures that are known to thrive in harsher conditions, so they make an ideal research subject because of their durability. They are a native species of the Great Salt Lake, proving that they can withstand a high water salinity of up to 20 %+ ( https://microbewiki.kenyon.edu/index.php/Salt_Lake). Brine shrimp range from around 8-10 mm, including the tail. They have nineteen body segments, 11 of them include twenty-two legs total. Brine shrimp have an exoskeleton…

Did you know that over a 100 million animals are killed due to animal testing in the U.S. alone (People for the Ethical Treatment of Animals)? Animal testing is the use of animals for testing in a lab and performing harmful and deadly experiments on including mice, rats, frogs, dogs, cats, rabbits, hamsters, guinea pigs, birds, monkeys, and fish. Animal testing is a controversial topic because some people say that it is a good thing and that animal lives can and should be sacrificed if it helps…

atmosphere pressure. After the autoclave is done for these flask containing the agar nutrient, it will be let cool to 50 ℃. The mixture is swirl throughly to mix agar and nutrients. Then the nutrient agar are pour and fill 2/3 full roughly 25-35 ml per petri plate and allowed to solidify for 10 to 15 minutes. Use the spreader to uniformly spread the bacteria. The next stage is the preparation of extracts. In this experiment which using the disk diffusion technique. This experiment use…

The person experimenting will need goggles, gloves, and an apron. To do the project, you will need nine glass petri dishes (make sure you get them sterile), agar, beef broth, sterile cotton swabs, three slices of bologna, three slices of ham, and three slices of turkey. Experimental errors would be breathing on the plate of agar, amount of agar, and water on the…

Coliscan easygel nutrient broth was stored in the freezer. Around 24 hours prior to sampling, the broth was moved to the refrigerator to thaw. The sampling procedure follows the procedure stated in the Coliscan Easygel Instructions. When we were ready to begin sampling, the thawed broth was placed into a cooler. We started sampling at Cornerstone pond then move to the Wyoming site, then downtown Grand Rapids, then Plainfield, and then Versluis lake. The procedure for Cornerstone pond and…