1. Make sure you label both plates on the bottom‚ with your name‚ date and name of pathogen you have chosen (listed above under materials) Then label numbers 1-5 on one plate and 6-10 on the other as there are 10 disks that need to be placed. Spread out in a circle formation like pictured below (This is the final product; look at this for reference on how to label) Now you are ready to start culturing. Start with one of your plates you can do both at the same time but to avoid making any errors
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thoroughly in each of the concentration and air dried. Moist filter paper discs were placed in glass Petri plates (9 cm diameter) on which a single treated leaf disc was kept (for no-choice method). In choice method‚ in each Petri dish‚ along with a treated leaf disc‚ one untreated leaf disc of same size was kept. Single pre-starved (3-4 hours)‚ 7-day old larvae of S. litura was released into each Petri plate. Ten replicates were kept for each concentration. Leaf discs treated with solvent emulsified water
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For my science exit project I decided to do a project that revolves around bacteria. I was suggested to do a project where I get a petri dish containing my oral bacteria and see the effects of liquid on my oral bacteria. I was very curious about this topic and wanted to know how the bacteria grows so I gave it a shot. For my project‚ I was told to make an “if and then” hypothesis. My hypothesis was that “If I put orange juice on a petri dish containing my oral bacteria then the bacteria on the petri
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What can speed up the decay of bread? Aims In this activity you are going to think about the conditions that would affect the speed at which bread decays and then design a fair test to investigate one of the. This will help you to understand all the points you need to consider when planning an experiment. Safety If you perform this activity: * Do not taste any food. * Wear gloves when handling food. * Wash your hands when you have finished setting up your experiment. * Your
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| | |Plate Tectonics Press Release | | | |
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Continental Drift and Plate Tectonics Theory (Part 1a) Introduction: The Beginning of the “Continental Drift Theory” In the middle of the eighteenth century‚ James Hutton proposed a theory‚ uniformitarianism; “the present is the key to the past”. It held that processes such as geologic forces- gradual and catastrophic-occurring in the present were the same that operated in the past. (Matt Rosenberg‚ 2004) This theory coincides with the theory of Continental Drift that was first proposed by Abraham
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Plate Tectonics Introduction Continental Drift Seafloor Spreading Plate Tectonics Divergent Plate Boundaries Convergent Plate Boundaries Transform Plate Boundaries Summary This curious world we inhabit is more wonderful than convenient; more beautiful than it is useful; it is more to be admired and enjoyed than used. Henry David Thoreau Introduction • • • Earth’s lithosphere is divided into mobile plates. Plate tectonics describes the distribution and motion of the plates. The theory
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The Juan De Fuca tectonic plate is found on the west coast of North America. It is next to the North American plate‚ and according to America’s Tectonics‚ the Juan de Fuca plate is getting subducted under it. This plate is made of oceanic crust‚ but it is also basaltic in some areas. It was named after the pilot and sailor‚ Juan de Fuca‚ an explorer from Europe in the 1600s. The Juan de Fuca plate has a divergent boundary in the Juan de Fuca ridge. New material is made by the Juan de Fuca ridge
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Plate Tectonics Press Release GLG/101 July-27‚ 2014 Kathy Howard Plate Tectonics Press Release How can the families of Los Angeles be prepared for an earthquake? This is a very important question that haunts us every day‚ because we don’t always know when they are coming and how bad they will be. I am Donte Lindsey and I am the director of Earth Preparedness of Los Angeles. With any type of danger the first thing you need to be prepared with is knowledge. Today we will discuss the hazards
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Planarians A planarian is a small free-living flatworm. These flat worms are usually found under rocks in fresh water. They are part of the phylum Platyhelminthes and in the class Turbellaria. Planarians are usually zoophagous‚ they feed on small living invertebrates and decaying organisms found in their community. Some planarians could eat segmented worms‚ leeches‚ snails‚ and other small herbivores. Planarians may also be organisms that gain their food energy with the help of decomposing
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