Get all the equipment’s ready and put them on a table. Take a pair of goggles and put them on and make sure hair is tied up‚ if long‚ using any sort of hair band. Take the 100ml glass beaker and place it under the water tap’s opening‚ the place where the water comes out from‚ then turn the tap on. Do not turn the tap off until the water inside the beaker reaches the 50ml mark‚ to ensure that there is only 50ml of water in the 100ml beaker. Then take the beaker and place it somewhere safe on the table
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1. What is the relationship between rate of ion exchange and surface-to-volume ratio? - As the surface-to-volume (SA:V) decreases the rate of ion exchange will also decrease. 2. Why is it important for a cell to have a large surface-to-volume ratio? - If the SA:V is too small then then rate of ion exchange will decrease‚ if this rate of ion exchange is too low then the cell will no longer be viable. 3. Which is more efficient at exchanging materials‚ a small or a large cell? EXPLAIN
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Discussion The purpose of this experiment was to determine if splitting a bean would affect its rate of respiration. Splitting a bean does not impact its rate of respiration. This is shown in the data‚ while the average rate of respiration for Whole beans is 1.35 and the rate of respiration for 1.16‚ the standard error of the mean is .15. Because the standard error of the mean is so high‚ they overlap in both of the data sets‚ which shows that the data is very similar. This is better shown in the
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Fundamental of Cell Biology A cell is the basic unit of life‚ and all organisms are made up of one or many cells. One of the things that all cells have in common is a plasma membrane‚ it is also called as cell membrane as it is works as a barrier between the inner and outer surface of a cell. In animal cells‚ the plasma membrane is present in the outer most layer of the cell and in plant cell it is present just beneath the cell wall. It separates the contents of the cell from its outside environment
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Diffusion is a natural act that takes place in the human body in order to utilize and absorb important concentrations into the body. In order to understand how diffusion works‚ it is important to understand how temperature plays a role. In connection with diffusion‚ a certain temperature must be obtained to begin the process. Introduction Diffusion is very important in the body for the movement of substances. An example would be the movement of oxygen from the air into the blood and carbon dioxide
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Macro-environmental Analysis Children’s Market APPENDICEs Appendix 1.0 Expanded pestle analysis of children’s market An extensive pestle analysis was conducted to highlight the reasons changes have occurred in children’s market. The key issues that affect the market were recognised through thorough research and are talked about in more details below. Political factors • Increased legislation on marketing to children • Increased emphasis ethics and responsible
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(depth of dye/time (minutes)) A 10 100 600 1000 3:5 5 mm (all the way through) .5 mm/minute B 20 400 2400 8000 3:10 5 mm .5 mm/minute C 30 900 5400 27000 1:5 5 mm .5 mm/minute Graph: Ratio of surface-area to volume Analysis: The colour change in the cells represents how far into the cells the sodium hydroxide was able to diffuse within ten minutes. The sodium hydroxide diffused into the cells at the same rate‚ .5 mm per minutes. This meant that only the smallest cube
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No.06 Determining water potential of potato tuber cells: the weighing method If a plant cell is in equilibrium with an external solution of such a concentration that there is not net loss or gain of water‚ the water potential of the external solution will be equal to the water potential of the cell. Use of this fact can be made in estimating the water potential of a plant tissue. Samples of tissue are immersed in a range of external solutions of different strengths. The solution that induces
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Simple Diffusion 1. The following refer to Activity 1: Simulating Dialysis (Simple Diffusion). Which solute(s) were able to pass through the 20 MWCO membrane? According to your results‚ which solute had the highest molecular weight? ______________________________________ Which solute displayed the highest rate of diffusion through the 200 MWCO membrane? __________________________ Using the data from Chart 1‚ explain the relationship between the rate of diffusion and the size of the solute.
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Lab Report One Exercise Five Activity One “Simulating Simple Diffusion” Activity Two “Simulating Facilitated Diffusion” Jessica Ogola Anatomy and Physiology 2401 Dr. Denyse Jones 02/02/2012 Objective: The objective of this experiment is to perform the simulation of the movement of solutes from a higher concentration to a lower concentration within a given amount of time. The goal of the exercise is to provide a simulation for the process of the facilitated diffusion of
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