or cut planarian back in the Petri dish using the pipet. 7) Measure the length of your control planarian without making any cuts. Gently place it back in the Petri dish. 8) Use the scalpel to make your cut for experimental planarian. Cut the planarian and record the chosen part: 9) Label your petri dish with your name and group. 10) Store the planarian: Light or Dark and the temperature it was kept. 11) Make sure there is water in the Petri dish. Cover the Petri dish and place it in a shady area
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------------------------------------------------- Name: ------------------------------------------------- Biology 104 ------------------------------------------------- Lab Section: 14 ------------------------------------------------- TA: Victoria Prescott ------------------------------------------------- Date: 9/13/2012 ------------------------------------------------- ------------------------------------------------- The Effects of Light Intensity and NaHCO3 concentrations on the Rate
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of the room‚ and how long the seeds are left in the specific environment‚ these factors are the most common. This paper focuses on the temperature of the seeds‚ specifically basil seeds. Basil seeds were placed on a damp towel‚ in two seperate Petri dish‚ and one was put in a room‚ to adjust to the temperature‚ and the other was placed in a refrigerator‚ which was a constant 45 degree Fahrenheit temperature. Review of Literature: The history of Basil is quite long actually. Sweet basil comes
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Experiment Hard Clam Juvinles term Toxicity: Introduction: Our testing involves exposing Hard clam juvinle to an interval of AgNo3 concentrations or a test sample for the purpose of determining the concentration or dilution levels that would cause the death of 50% of the organisms (LC50) exposed over 24 h and meeting the conditions defined by this method. If necessary and possible‚ the following may also be determined: a) the concentration level that causes the death of 20 % of organisms exposed
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Title Antimicrobial properties in different type of plants. Introduction A substance that kills or prevents the growth of microorganisms for example bacteria‚ fungi or protozoans is called an antimicrobial. This substance has 2 major roles which are to either kill microbes (microbiocidal) or prevent the growth of microbes (microbiostatic). Disinfectants are antimicrobial substances used on non-living objects outside the body. This substance included antibiotics‚ antifungals‚ antiprotozoals and
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The effect of Sodium Chloride (NaCl) salt concentration on osmosis in potato cells The movement of substances in plant cells involves many processes and systems‚ all of which may affect the plant bio-chemically and physically‚ and one of these processes is osmosis. Osmosis is the flow of water through a semi-permeable membrane of a cell moving from an area of higher water potential to an area of lower water potential until reaching equilibrium known as isotonic. Before reaching the point of being
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Methods First‚ each researcher collects two petri dishes. After collecting the Petri dishes the researcher lines the dish with a papertowel. Then fills it with water‚ damping the paper towel and dumping out the exsess amount. Next‚ the researcher places 25 seeds on the paper towel in both petri dishes. After the seeds are placed in the dish‚ each researcher tapes the dish shut and takes them back to their place of residence. Placing one dish
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soil were placed in each chamber of a double petri dish with one being dampened before being placed in. For the light and dry experiment a light was hung above one chamber of another double-chambered petri dish while the other chamber was covered with aluminum foil‚ after placing soil in both chambers. An equal number of Pill bugs was placed in each chamber and a study was taken for ten minutes where every thirty seconds the number of Pill bugs in each dish was counted. The results showed that Pill
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body samples by culturing them on the appropriate media using aseptic transfer techniques. Materials • Distilled water • Test tube • 6 Unopened packages of 1 sterile cotton swab • 2 sterile nutrient agar Petri dishes • 1 sterile blood agar Petri dish • Incubator • Refrigerator • Bunsen burner • Gas connection • Plastic tubing • Inoculating loop • 12 sterile glass slides • Wax pencil • Igniter • Crystal violet dye •
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group removed the dry seedpods from the plant. We then removed the seeds from the pod. To start the germination process‚ a moistened piece of filter paper was placed into a petri dish. 40 seeds were neatly placed into each petri dish until there were no seeds remaining. Once all the seeds were placed in the petri dish‚ the petri dishes were placed in a plastic bag and set to germinate for approximately 48 to 96 hours in the window at room temperatures. Results Table 1. F2 Generation Seed Germination
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