growth of bacteria on Agar plates Hypothesis: That the bacteria will grow in colonies throughout the agar plates except for the one with the anti-biotic loop because some will fight off the bacteria. Method: (Method taken from prac sheet) Plate 1: Use the swab to cover your entire agar plate in your bacteria. You only need one swab of bacteria but be careful to cover the entire surface of your agar in a layer of bacteria. Carefully place an Antibiotic Mastring on top of the agar (use tweezers) in the
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The Anderson School at UCLA POL 2002-05 Numbers 101: The Diffusion of Innovations Copyright © 2002 by Richard Rumelt. This technical note is a quick introduction to the use of diffusion models in forecasting. We use diffusion models in cases where an innovation diffuses through a population. In this note we focus on the simplest diffusion model: the logistic model. This model produces the familiar “S” curve in which a period of rapid acceleration is followed by deceleration and‚ finally
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Diffusion 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
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differed between my group’s nutrient agar and MAC agar plates. In courgette‚ there was moderate growth in nutrient agar while it was heavy in Mac agar. In beef broth‚ there was slight growth in nutrient agar while it was negative in MAC agar. In fresh basil‚ growth was heavy in nutrient agar while it was heavy in MAC agar. Where cottage cheese was the ingredient‚ both plates had heavy growth. For walnut‚ growth was slight in nutrient agar while it was negative in MAC agar. Generally‚ the slight difference
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in the artificial cells to the diffusion rate using the phenolphthalein-NaOH agar and the HCl solution. Lab #2 was a model of diffusion and osmosis‚ in which we filled the model cells with different solutions and determined the rate of diffusion. In lab #3‚ the results demonstrated the interactions between selectively permeable membranes‚ water‚ and solutes and how they are important in cellular and organismal functions. In lab #1‚ the results showed the diffusion rate between the certain time period
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Jelly bean tasting Aim: to decide which gender is better at determining the flavour of jelly beans using the sense of smell and taste. Materials: • jelly beans to taste • Blindfold to make sure students cannot identify flavour of jelly bean by colour • Snap-Lock bag to carry jelly beans in • Glass of water to refresh taste buds after each Jelly bean Hypothesis: If students are only allowed to use their sense of taste when guessing jelly bean flavour. Then females are more likely to guess
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Effect of Temperature on Salt Diffusion Rates and it’s Relation to the Human Body Hypothesis: Ordinary table salt is known to dissolve easily in water. Dissolving or diffusion is the spreading of particles in another substance. This is seen when smoke from a chimney diffuses in the air around it‚ or when dropping coloring in water. When NaCl‚ sodium chloride‚ or otherwise known as ordinary table salt is combined with water the separate salt and water molecules will be attracted to each other
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Diffusion of innovations From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search The diffusion of innovations according to Rogers. With successive groups of consumers adopting the new technology (shown in blue)‚ its market share (yellow) will eventually reach the saturation level. In mathematics the S curve is known as the logistic function. Diffusion of Innovations is a theory that seeks to explain how‚ why‚ and at what rate new ideas and technology spread through cultures. Everett
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catch food. The coronal muscle allows the animal to pulsate in order to move. Impulses to contract are sent by way of the subumbrellar nerve net and are nervous in origin. The moon jelly has rhopalial centers‚ which allow it to control the pulsations. As the oxygen rate in the water goes down‚ so too does the respiratory rate of the jellyfish. The Moon Jellyfish is found in three oceans. The Atlantic Ocean‚ Pacific Ocean‚ and the Indian Ocean. They are found near the coast‚ mostly in warm and tropical
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Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name Lab Time/Date ___ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Size of material and concentration 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what I predicted
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