Most Effective Hand Cleaner Introduction: The purpose of this experiment is to: (a) determine if hand soap or alcohol gel is the most effective in killing Staphylococcus aureus (b) obtain the statistical difference of effectiveness in killing S. aureus between hand soap and alcohol gel. The null hypothesis is that neither hand soap nor alcohol gel is effective in killing S. aureus more than the control group which is nothing at all. The alternate hypothesis is that hand soap versus the control
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uk/how-do-disinfectants-antiseptics-work.html U.S World Health Organisation. (2010‚ December). Traditional medicine: a global perspective. Retrieved July 6‚ 2011‚ from Bulletin of the World Health Organisation: http://www.who.int/bulletin/volumes/88/12/10-079822/en/ (2007) (2007). Microbes and Biotechnology (Chapter 17). In A. Damon‚ R. McGonegal‚ P. Tosto‚ & W. Ward‚ Higher Level Biology - Developed Specifically for the IB Diploma (pp. 540-541). Essex: Heinmann - Pearson Education Limited.
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Termite behavior when exposed to pen ink Abstract To test the hypothesis that termites are more attracted to ballpoint pens than pencils‚ highlighters‚ and sharpies. A random-single termite was given out of a jar of termites and placed in a petri dish‚ which trapped the termite. Paper‚ pencils‚ pens‚ highlighters‚ and sharpies were also given out. Each group drew multiples circles on the paper with all 3 of the writing utensils. The circle the class used was shaded in halfway with paper mate
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then the plant will have a starch level of 3 because it has all of the necessary environmental conditions. Materials: safety goggles iodine solution petri dishes razor blade forceps beakers trays potting soil plastic lids 95% ethyl alcohol sodium hydroxide medicine cups Procedures: 1. Compare the plants in each tray(characteristics) 2. Label petri dishes dark‚ closed‚ normal‚ closed no CO2 3. Take one leaf from a plant in each try 4. Immerse leaf in boiling water for 1 minute 5. Remove the pigments
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Materials: Refer to lab handout Procedure: Part A 1. Fold a paper towel until it fits into a petri dish 2. Put the folded paper towel into the petri dish 3. Pour 12ml of water into the petri dish (inside the paper towel) so that the paper towel absorbs the liquid 4. Place 10 seeds(peas‚ beans or corn) into the petri dish (inside the paper towel) 5. Seal lid on petri dish with tape 6. Pour 12 ml of pH3 acid into a graduated cylinder 7. Repeat steps 1-5 with the pH3
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org/wiki/Spearman%27s_rank_correlation_coefficient Planning Materials 1 15cm by 15cm Piece of thick black paper Sharp pencil 1 600cm3 Glass beaker Ice- enough to fill the beaker up to 2cm from the top 2 Table lamps Tripod Mercury thermometer 10 Maggots Stop clock 2 Petri dishes
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celery before emersion into the sucrose solution. The constant control variables were the potato and celery. Materials (Entire lab class) * Large potato tuber‚3 celery stalks * 24 test tubes(4 tubes per group of four students) * 6 petri dish(1 dish per group) * Wax marking pencils‚paper towels * Forceps‚balance‚Aluminium foil‚razer blade‚knives * 100mls sucrose solutions: 0.1‚
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-Added one drop of oil immersion. -put the slide on the stage of compound microcope. -finaly‚watched the slide. Isolation of bacteria method -wiped working area with disinfectant. -Obtained a sterile petri dish of nutrient agar‚kept led on ‚and used the marker to divided the petri dish ‚into teo sector. -opened lte lid slightly‚inoculate sector number 1 with thumbprint. -Taked sterial wire loop to transferred colony from a broth to an agar plate. -The loop should be cooled in the air
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Polycephalum Nathan LHypothesis: The slime mould will attempt to bypass the barrier to reach the oats. Independent Variable: The path provided by the colored Lego blocks. Dependant Variable: The path in which the Polycephalum Constants: The size of the dish‚ the species of slime mold‚ the light the slime mold received‚ and the temperature it was kept. ] 1. After two days of growth‚ did P. Polycephalum connect the oats throught the shortest distance? Yes a. Can you provide evidence through
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Bacteria and Toothpaste: The Effect of Toothpaste on Bacteria Table of Contents Page 1: Title Page Page 2: Table of Contents Page 3: Introduction Page 4 – 6: Research Page 7 – 10: Lab Report Page 11: Conclusion Page 12: References Bacteria and Toothpaste: The Effect of Toothpaste on Bacteria My project is on Toothpaste and Bacteria‚ and how bacteria is effected by toothpaste. I found this project very interesting because it was an opportunity
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