1- Explain how Brownian movement exemplifies diffusion. The Brownian movement is random movement of microscopic particles suspended in a fluid‚ caused by bombardment of the particles by molecules of the fluid. First observed in 1827‚ it provided strong evidence in support of the kinetic theory of molecules. The diffusion is a form of Brownian movement‚ or we can say The Brownian movement leads to diffusion in three different types‚ where the particles move from high concentration to low concentration
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Introduction: The objective of this experiment is to demonstrate osmosis by using an egg as a model. In order for this to happen the vinegar will make the eggs shell disappears. The reason for this is because vinegar has acetic acid and the shell has calcium carbonate‚ when these come into contact it produces carbon dioxide. This is the reasoning for the little bubbles when the egg is first put into the vinegar. After the shell discinigrates it will become rubbery from the acetic acid‚ at this
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MY DADDY’S RECIPE Chicken Fricassee is a popular dish made in the Puerto Rican culture. With this dish‚ we cook red beans and rice on the side‚ making it a complete full course meal. The number of spices in this dish I guarantee will leave every taste bud in your mouth satisfied with every bite. As a Child‚ my father would make me chicken fricassee when I was sick. Not only does is make the perfect dish‚ but it’s also “the miracle soup”‚ gets the job done every time by curing my cold or whatever
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How to Make a Pizza Generally if you ask someone what their favorite food is you’ll probably hear the word pizza. Pizza is one of everyone’s favorite foods. There is so many different toppings‚ cheeses‚ sauces‚ and crust styles. But not everyone knows how to make a pizza‚ so this essay will break the recipe down step by step to tell someone how to prepare and create a pizza. First‚ to start out you must start by prepping all of the necessary items for the pizza. Generally you will start by
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Osmosis Rates in Artificial Cells Daniel George Department of Biology Grand Valley State University 1 Campus Drive Allendale‚ MI 49401 georged@mail.gvsu.edu Abstract The lab for this paper was conducted for the topic of osmosis‚ the movement of water from high to low concentration. Five artificial cells were created‚ each being filled with different concentrated solutions of sucrose. These artificial cells were placed in hypertonic‚ hypotonic‚ or isotonic solutions for a period of 90
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Osmosis 4/13/13 MLT1 Lab 9 Performed at Home Microbial Growth There are three types of environments in which cells are located which include isotonic‚ hypotonic and hypertonic. In an isotonic environment‚ the amount of water and solute are the same both inside and outside of the cell. As water drifts into the a cell‚ the same amount flows out creating a balanced environment both inside and outside of the cell. When there is a high level of
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. Which of the following is true of osmosis? You correctly answered: c. It is a type of diffusion. 2. Which of the following occurs when a hypertonic solution is added to cells? You correctly answered: d. The cells shrink. 3. The variable that affects osmotic pressure is You correctly answered: a. the concentration
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Abstract: Osmosis is the transport of water across a selectively permeable membrane from a region of a higher water chemical potential to a region of lower water chemical potential. (Tzahi 2006) To demonstrate osmosis lab‚ artificial cells were made with various sucrose concentrations and were placed into beakers of different sucrose solutions. Overall the results showed that the higher percentage of concentration gradient of sucrose‚ the more the artificial cells absorbed. Introduction: The
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Eggsperiment Table Of Contents: Research and Background: 1 Procedure: 2 Research and Background: 3 Experiment: 4-8 Graphs: 5-6 Experiment: 3 Procedure: What you need: -Four raw eggs -Four cups of white vinegar -beakers/cups for the eggs What to do: 1. Put the 4 eggs in each cup with one cup of vinegar. Let that sit for 24 hours. This will make the egg shell come off or dissolve. If the egg shell is not
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The purpose of this experiment was to test the tonicity of potato cells. The potato cells were placed in different test tubes with water and were left there for 15 minutes. The percent change in mass is then used to determine if the cells lost or gained water‚ therefore determining the tonicity of the cell. Although it was a brief short time‚ the final results showed that the more water the potatoes were placed in‚ the more hypotonic the potato becomes. Tonicity is stated to be the state of a solution
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