Petri dish

took 2 petri dishes that already had agar gel applied to them, and labeled them ‘Control’ and ‘Experimental’. We added 3 drops of the 1% Ammonium Nitrate solution using a dropper to the Control dish. We didn’t add anything to the Experimental dish in order to maintain the regular growth medium. We then inoculated each plate with three drops of the fern spores that we were given by the TA. And then we spread the spores evenly across the surface of both the mediums. And then we covered the petri…

cap. Lift the lid of the Petri dishes. Place 2-5 drops of culture in the centre of the dishs. Replace the lid as quickly as possible. Discard the dropping pipette into the beaker of disinfectant. Take the bottle of melted agar. Remove the cap and pass the neck through the Bunsen burner flame 2-3 times. Pour the contents into the Petri dishes carefully. Replace the lid as quickly as possible. Flame the neck again and replace the cap on the bottle. Keeping the Petri dish flat on the bench, mix…

The top cover of the petri dish was put back on and the planarian was put back into the cabinet. The shocking process was conducted 5 days a week and once per day. However, the feeding process was either 2 or 3 times a week and it was also done once per day. A month after testing the planarian, it was time for it to be cut and regenerated to see which half would respond to the flash of light. There had to be a way to cleanly slice the planarian in half so it could perfectly section of the head…

These materials included, a clean dual petri dish, an iPhone 6s, two cotton balls, eight pill bugs, a small clear container, a small paint brush, a saturated pipet of 0.1M sodium hydroxide (NaOH), and a saturated pipet of 0.1M hydrochloric acid (HCl). Methods: After obtaining all the materials, the first thing done was to place the cotton balls in the center of each circle in the dual petri dish. The cotton ball on the left side of the dual petri dish was then saturated with 0.1M hydrochloric…

using hand sanitizer, because the hand sanitizer works by denaturing proteins making it very difficult for growth to occur (Boyce & Pittet, 2002). This turned out not to be the case when I observed the colonies growing on my Petri plate dish. Based on observation on my Petri plate I had more growth of colonies on quadrant D (hand sanitizer technique) than any other quadrant, and this sort of disproves the notion that hand sanitizers kill 99.9% of germs. Clearly the hand sanitizer did not kill 99…

It is a medium-sized dish, standard in high school science labs, measuring about 4.5 inches. The base background is a lime green epoxy with a yellow border. In the middle of the pieces sitting diagonally across is three white circle with a bright yellow circle in the middle…

Effect of different cleaning products of the growth of K12 strain Escherichia Coli? Which household cleaning product (hydrogen peroxide, Pine-sol, Clorox Bleach, Mr Clean antibacterial liquid cleaner) is the best inhibitor of K12 Escherichia coli (E. coli) growth? The manipulated variable was the cleaning product or disinfectant on used of the Whatman antibiotic assay paper disc. The dependent variable is the zone of inhibition of the prokaryotic bacteria E. coli. In topic one IB requires that…

is learning how to conduct experiments, and last week for our experiments we were broken into groups and given instructions to swab any two different objects. After swabbing our two objects, we were then suppose to wipe each swab onto a divided petri dish in order to see which object had more bacteria. My group could have chosen any two things in the entire universe, but yet we decided to see if there was more bacteria in our mouths or on our index fingers. I guess none of use felt like getting…

The ammonia color detector tube will be broken just under the ceiling of the third floor. In addition, the ladder will provide a vantage point for measuring the ammonia gas receding from the colony. The carbon monoxide color detector tube will be broken within ten feet of the colony from the third floor. This will give a reading of the carbon monoxide levels that the colony is exposed to on a day to day basis. In the meantime, a Hobo Meter will be activated amidst the other readings taking…

average growth in the incubator petri dishes was also 0mm^2. On the other hand, the average growth of the decomposer colonies in the room temperature petri dishes was 2,916mm^2. In the room temperature petri dish, the colony grew at an…