In this experiment, the microbes e coli, bacillus sp and an unknown microbe from petri dish 1 were categorised as gram negative or gram positive and their shape was identified these staining techniques are the correct way to identify the shape and size of microbes. Once you have introduced bacteria to the petri dish, use a cotton swab to place a small drop of hand sanitizing gel, disinfectant soap or household bleach into the center of the bacteria sample, then continue the experiment as normal. Bacteria are microorganisms that grow everywhere we can collect and grow them in specially prepared petri dishes blood agar or tryptic soy agar with 5% sheep's blood is an excellent medium for supplying bacteria with nutrients and an environment in which we can see them grow. You'll get six large petri dishes, 10 cm (4 in) in diameter, a microwave safe plastic beaker, cotton swabs and the highest quality nutrient agar this is the same nutrient agar used by. Step 5- collect data: in this experiment, bacteria will start to grow in the petri dish over the next few days, and you may be surprised by just how much gross bacteria is lurking in your school take good notes each day and determine which dish has the most bacteria growing in it.
In this case, we will indeed be observing the microbes growing on the petri dish after put in an incubator for 72 hours controlled variables: controlled variables are there for us to keep constant the temperature, time, medium, the way the sample is collected and the incubation will be our controlled variables. Place the grid sticker on top of the petri dish and with your sharpie, divide up the dish into four sections label sections in order of how you will test them grab your cotton swab and rub it against anywhere in your school and gather bacteria that you will use. Just growing bacteria in a petri dish is not a science fair experiment yes, it is gross and cool and fascinating, but it doesn't meet the requirements of a science fair project if you want to do a science fair project about germs, you have to add a variable, or something that changes in the experiment. Effects of uv light exposure on bacteria - 1 - petri dish lid on sa 1, 17 3 5, 19 7, 21 9, 23 11, 25 13 15 answer the questions in the lab report.
Purpose: the purpose of this lab is to see how antibiotics affect bacteria in this activity you will observe the effects of antibiotics on bacteria that were cultured in a petri dish in this activity you will observe the effects of antibiotics on bacteria that were cultured in a petri dish. This bacteria growth science experiment is part of my summer stem lab series of posts aimed at school age kids you could absolutely do this science experiment with preschoolers but i wanted to share some of the stem fun i am having with my 6 and 9-year-old this summer here on the blog so i created this series. Observing fungi in a petri dish students should examine cultures in containers, which have been taped and closed colony morphology is a method that scientists use to describe the characteristics of an individual colony of fungi growing on agar in a petri dish.
I sampled the bacteria by using swab, the gloves and the petri dish with agar first, i made my experimental question and hypothesis with my group-mates second, i decided that i am going to sample the keyboard in jordan's room. Watch the birth of a superbug: incredible experiment shows how bacteria evolve on a giant petri dish giant petri dish divided into areas of increasingly high antibiotic doses. Lab #4: bacterial growth media & cultures lab this is the main page for the media & culture laboratory topic of an 8-week introductory college microbiology class the following links will take you to the virtual microbiology classroom documents that you will need to prepare for lab.
Start studying micr lab: ubiquity of microbes learn vocabulary, terms, and more with flashcards, games, and other study tools. In the laboratory, transferring a bacteria population of microorganisms to a growth medium (petri dish), is referred to as inoculation the microorganisms are called the inoculum a) we started the inoculation process by labeling our petri dish on the bottom. Bacteria lab report i had questions on how i would collect this bacteria and if there would only be bacteria in the petri dish when the experiment was over my. Microbes petri dish experiment the microbes growing on the petri dish after put in an incubator for 72 hours science lab, making sure that you have petri.
In this lab you will be innoculating plates and observing bacterial growth microscopes can then be used to identify specific bacteria this lab may take several days, keep all data and observations in a separate notebook to be compiled and organized into a final lab report. Microbes petri dish experiment (lab report) also, pupils from the senior school are going through puberty and tend to sweat a lot more than little kids, especially the boys sweat glands also work more rapidly with boys going through puberty, as their hormone levels are beginning to increase.
- universal bottles, weighing machine, spreader, refrigerators, incubators, petri dish, opsp medium, inoculation loops,a stomacher, microscope and a source of heat the following methods was used during the experiment. In my petri dish, have a lot of different color bacteria for example, i saw light yellow color's colonies, and red color's tiny colonies my colony #1 was the biggest one. Moreover the sterile of petri dish and tips that were used also helps to render sterility of the technique according to the hypothesis, there are chances for contamination in the nutrient samples while practicing lab without aseptic technique.