of concentrations from 0 to 1.0M. Then we weighed all the potato cylinders on an electronic balance (see results) and recorded the results. We placed enough pieces of potato to cover the bottom of the petri dish and left them for 60 minutes. After this time we drained out the solutions from the petri dishes and carefully placed them in order of molarity on a paper towel. We also measured the total mass of the discs in each solution after soaking in the solutions (see results). Percentage change
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Determining Photosynthetic Activity in Plants Using Different Wavelengths of Light and Pigmentation Abstract The roles played by light and pigmentation in photosynthesis were examined in the geranium and Coleus plant. In addition‚ the separation of certain pigments based on their molecular structure was also examined‚ with the use of paper chromatography. When different leaves of the geranium plant which were exposed to different wavelengths of light‚ photosynthesis proved to be most actively
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This project is beneficial because regeneration is a big topic right now and regeneration in biology is the process of renewal ‚ restoration ‚ and growth that makes genomes ‚ cells ‚ organisms ‚ and ecosystems resilient to natural fluctuations or events that cause disturbances or damage. So regeneration is only applicable to some animals but in the future it could grow to other animals and maybe in the far future humans with the proper research and experimentation . my data will allow scientist
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Background: Bacteria is a prokaryotic cell that reproduces using the process of binary fission. Binary fission is “The process in which a parent cell splits into two daughter cells of approximately equal size”(northwestern.edu). The reproduction of bacteria can be stopped using antimicrobials. Antimicrobials were created and are used “to destroy disease-causing microbes”(cdc.gov). That means that antimicrobials fight and destroy organism such as bacteria. We use antimicrobials to clean are house
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QUEENSLAND ACADEMIES FOR SCIENCE‚ MATHEMATICS AND TECHNOLOGY International Baccalaureate Diploma Program Extended Essay in Biology Is Tea-tree Oil effective in controlling and minimising the growth of the Escherichia coli Bacteria? A study of the effectiveness of a Natural Antiseptic Candidate Name: Lois Adrienne Dianne Soriano Dulay Candidate Session Number: 003072-032 Word Count: 3997 Supervisor: Ms Kate Barry Date of Submission: 25th July 2011 Acknowledgments Firstly I would
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Acacia decurren seeds are exposed to heat‚ then the rate at which they germinate will be increased. Experimental Design and Method: The main utensils used in this experiment were the assortment of 60 Acacia decurrens seeds‚ cotton wool and 2 petri dishes‚ which were all
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Is there a significant difference in height of Bracken (Pteridium aquilinum) from a light area and a dark area? Abstract: This investigation was designed to compare the height of Pteridium aquilinum in a light area and a dark area of Rushy Plains‚ Epping Forest and to establish if light intensity does have an effect on the growth of Pteridium aquilinum‚ commonly known as Bracken. From my research it was clear that the height of Bracken is affected by abiotic factors‚ other than light intensity
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Was the discovery of penicillin an accident? Who really discovered penicillin? Many believe that penicillin was discovered by Alexander Fleming‚ although he sparked the research for penicillin‚ he wasn’t the first. Penicillin had and still does have an effect on the medical world. Penicillin has a very rich history behind it‚ and it is still used world round. One significant story that led to the discovery of penicillin was the one of Alexander Fleming. Although Alexander Fleming is credited for
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before she died cells were cut from her cervix. There are many‚ many HeLa cells in labs today‚ an inconceivable number intact. Henrietta died in 1951 from cervical cancer. Before she died a surgeon took samples from her tumor and put them in a petri dish. Her cells reproduced a new generation every 24 hours‚ the first immortal cells every in a lab. Her cells helped scientists find new ways to treat cancer‚ herpes‚ influenza‚ and Parkinson’s. Her cells have become the standard in labs. HeLa cells
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Petri dish- This is used to transfer the agar cubes as you should put the cubes in there as some of the chemicals can be dangerous Safety goggles- These are essential to keep your eyes protected from harmful chemicals White tile- To help to see the colour
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