The Effects of Osmosis and Diffusion The experimentation of last week’s lab was in order to test the many effects of diffusion and osmosis amongst four experiments. One such experiment was testing the effects of molecular weight on diffusion in relation to the use of Agar. The methods performed included the use of two acids‚ HCl and acetic acid. Both acids were placed into an Agar-filled dish and‚ over increments of 15 minutes‚ data collection was taken based off the diffusion rate and the
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skin burned off and spinal cord crushed? This is the reality for more than 100 million animals worldwide. In Canada‚ over 3.33 million animals are used in experiments and over 125 000 are subjected to severe pain. The animals are left for days to wait in fear of the next terrifying and traumatic experiment that will be performed on them. Major effects of stress and boredom trigger neurotic behaviors in the animals these include spinning in circles‚ rocking back and forth‚ pulling out their own hair
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Animal rightsPros and cons of animal experiments Personaly I don’t think that there are many pros about this subject‚ but I’ve written down a few. Pros: There are vaccines for most of the diseases. Like the ones you’ll recive when you’re an infant‚ wich are very important. If you have a deadly disease‚ like cancer for example‚ you can prolong your life for years‚ if you discover it early enough. Thanks to the science and research with animals. In some cases you can also help sick
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most debated topics of our times is whether we should use animals for ex-periments or not. The interesting point that always comes up is what else is there instead of our dear friends. Without our lab creatures; our medicines‚ cosmetics and food would not be tested and might not be safe for our use and consumption. The process of using animals to test safety of food and medicines was practiced for many centuries. People watched domestic animals and studied their eating habits to identify food and herbs
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And Osmosis Abstract In this Diffusion and Osmosis lab a total of three experiments were performed. For experiment 5.1 we investigate diffusion through a selectively permeable membrane and the many factors that influence the rates of diffusion. In experiment 5.2 we investigate both animal and plant cells in different molar solutions and the different osmotic behaviors within the cells. In experiment 5.3 we test the osmolarity of plant cells through the usage of potato tuber cells. In experiment
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AP English Language and Composition Period Argument Analysis for Shaw – “On Experimenting with Animals” A. Briefly Paraphrase each paragraph of the essay. Paragraph 1: The author opens his essay by introducing information that is logical to the reader. This is done by discussing the rights to know and live; while also discussing the pains that follow. Paragraph 2: This is where the author gives contrasting statements on how too much knowledge is not restricted. Instead‚ people
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50‚ 1.44‚ 1.31 1.42 1.43‚ 1.23‚ 1.36 1.34 -5.63 8 1.41‚ 1.17‚ 1.26 1.28 1.08‚ 1.21‚ 0.97 1.09 -14.84 10 1.29‚ 1.17‚ 1.18 1.21 0.94‚ 1.01‚ 0.96 0.97 -19.83 Table to show the 2nd experiment Sucrose Concentration (%) Mass before (g) Average mass before (g) Mass After (g) Average mass after (g) Percentage increase/decrease (%) 0 1.30‚ 1.40‚ 1.20 1.30 1.37‚ 1.37‚ 1.54 1.43 10 2 1
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the microstructure of a typical animal cell and the functions of the main cell components. A typical animal cell is seen as a tiny‚ three dimensional sac which is in fact made up of many components‚ each as important as the other. The microstructure of an animal cell was in fact uncovered mainly through the use of both cell fractionation and electron microscopy. Each main component has its own‚ individual function which helps a cell to function and maintains the cell membrane. The components that
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Animal cells vs. Plant cells Five Similarities Animal and plant cells have many of the same characteristic. Animal cells and plant cells are both eukaryotes. They both have cell nucleus which contain chromosomes or DNA‚ as well as cell membrane encompassing the cell to control the substances moving in and out of the cell. They both contain enzymes from liposome for breaking down larger molecules. Animal and plant cells both transport protein into and out of cells through endoplasmic reticulum
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the Rate of Osmosis Using a Glucose Solution Melissa Werderitch Biology 157 11/6/06 Introduction In a journal article written by Florian Lang‚ osmosis is essentially explained as the flow of water from one area to another that are separated by a selectively permeable membrane to equalize concentrations of particles in the two locations (Lang‚ 1997). Osmosis is able to maintain osmotic pressure and regulate a cell’s volume. In a hypotonic () or hypertonic () environment‚ a cell may be liable
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