These chambers were to see the yeast cells in a microscopic view and if or if not our hypothesis were true. The materials that were used a compound light microscope, a Pasteur pipette, and a hemacytometer to view the cell count of collected yeast. The methods that were go about was simple, to view the two cultures and compare them both. As a result of the t-s value was .035, as the value was lower than the critical value it’s said it’s being rejected. Thus as our experiment has been rejected our hypothesis comes in a stand still whether antibiotic dose really effect yeast cell cultures.
In Microbiology Lab 3 I chose the unknown culture #14 and ultimately identified it as Staphylococcus epidermidis bacteria. On a microscopic level I found the organism to be gram positive with a coccobacillus shape and both tetrad and cluster cell arrangement. I performed an isolation streak with S. epidermidis on Nutrient Agar which resulted in pinpoint, round, entire, and flat macroscopic morphology. I took a loopful of the organism from the Nutrient Agar and placed it on a slide to perform the catalase test. I added a few drops of 3% Hydrogen Peroxide and it resulted in bubble formation.
The hypothesis for this experiment was that the higher the concentration of hairspray added to the plant, the bigger the effect, and therefore the least amount of growth. It was figured that if the seeds that were contaminated with 15% concentration of hairspray grew the least and the 5% concentration grew the most (besides the control group), then the hypothesis would be accepted and the contaminant would have a trusted effect on the radish seeds. Methods To start the experiment students gathered four plastic plant pots that were 3.5 inches in diameter, filled each with provided soil up to about one inch from the top. 20 seeds of Wisconsin fast plant (radish seeds) were added to each pot of soil. The pots were labeled: control, 5%, 10%, and 15%.
The results from this test were negative. The last test I performed was a Malonate Utilization Test. The purpose is to see if the microbe can use the compound malonate as its sole source of carbon and energy for growth. The lab results indicated a positive reaction. Procedure: Conduct Bacterial Growth Test: 1.
Fern Spore Germination and the Effects of Ammonium Nitrate Name Lab Partner: U-# BSC: 2011L Section: 908 April 10, 2014 Abstract: The effect of 1% ammonium nitrate on Ceratopteris richardii spore germination was tested in this experiment. Past experiments have been done on Botrychium dissectum and they found that when the spores were grown in the presence of ammonium, they had the best growth rates. Also when they had ammonium nitrate present, even more spores germinated compared to when they only used nitrate by itself. They did several tests using nitrate, ammonium, and then a combination of ammonium nitrate. Basing our hypothesis off of this past experiment, I hypothesized that in the presence of ammonium nitrate we should see an increased germination rate of our spores from the Ceratopteris richardii.
There is also the possibility that by choosing standard over non-standard your might be missing out on another factor that make the herbs main component work even better. For my three herbs to compare I have chosen Bilberry, Green Tea, and St. John’s wort. Starting with Bilberry the scientific name is Vaccinium myrtillus. Bilberry is used in many ways some of which include improving night, controlling insulin levels, to treat varicose veins, and to prevent cataracts. The standardized form I came across labels the function as being used to support eye health.
Plant Growth 1 Running Head: PLANTS AND HOW LIQUIDS AFFECT THEIR GROWTH Plants and How Liquids Affect Their Growth Plant Growth 2 Title page Table of Contents Abstract Acknowledgements Introductions Purpose Problem Hypothesis Variables Materials Procedures Pictures Data Tables Graphs Conclusion Bibliography Table of Contents 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16-17 Plant Growth 3 Plants and How Liquids Affect Their Growth Abstract This experiment is on plants and how different liquids can affect them. The purpose of this experiment is to figure out why different liquids affect plants differently. To do the following experiment you need to 1. Put one plant in each pot of three pots 2. Label one pot A, one pot B & one pot C 3.
The agar plate with the –pGLO LB / amp add no bacteria living in it because it wasn’t ampicillin resistant. But on the other hand the +pGLO LB/amp had a colonies of bacteria because when there is the pGLO plasmid it makes the e-coli bacteria ampicillin resistant so that is the reason why there are colonies of bacteria on the agar plate. For the last agar plate left the +pGLO LB/amp/ara this agar plate is the one that genetically transformed this is the one that could glow under the UV light <Fig 3 bottom right>. The reason that it glowed is because of the arabinose gene on the agar plate, that arabinose gene is the gene that triggers the GFP gene to express
Sara Ellen Goodwin September 28th, 2014 Organismal Biology Final Lab Report Sunlight and Herbivory Responses in Brassica rapa Under Laboratory Conditions Abstract: Set out to understand how the growth of Brassica rapa changes under flood like conditions, plants of the species were grown in lab in varying watering constraints. The study aims to begin understanding the important dynamics between precipitation and plant viability. Seeds were planted in separate pots in identical conditions with estimated average levels and flood levels of water administered weekly (100 mL and 200 mL respectively). Plants were in pots surrounded by plastic mesh at a height of 22 cm for later herbivory response assessments. These experimental parameters were later abandoned.
The only thing missing were all the little arthropods. The tree didn’t grow. He added a single millipede and the nutrient content of the soil increased NINEFOLD! MANAGEMENT Yi and Moldenke evaluated the effect of four different forest management techniques, unthinned control and three thinning intensities (light, light with gaps, and heavy thin), on arthropod abundance, diversity, and community structure as an indicator of ecological processes affecting other forest fauna. Arthropod abundance and diversity was higher in heavy and light/gap