Unit 4 Lab – Effects of Osmosis on Living Tissue Assignment Total: 35 Points Course Weight: 6 Pre-Lab Preparation - Review the following resources to complete this assignment: Textbook: Chapter 5‚ pg. 83-86 Mastering Biology / Study Area / Chapter 05 – The Working Cell / Student Home Key Concepts Video: Plasmolysis Video: Turgid Elodea Activity: Membrane Structure Activity: Diffusion Activity: Osmosis and Water Balance in Cells Bioflix: Membrane Transport Additional Resources Blast Animation: Diffusion
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Name: Class: NT1310 Date: November 30‚ 2013 Assignment: Unit 1‚ Lab 1: Data on Fixed Line vs. Cellular Debate Fixed Line vs. Cellular Debate As many as one in six American households have given up their landline and are using only their cell phone‚ according to Steven Blumberg‚ a senior scientist at the Center for Disease Control’s Statistics department. If you are among the millions of Americans who are weighing the pros and cons of landlines vs. cell phones‚ here
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I am going to investigate osmosis when potato is placed in different concentrations of sucrose. I am aiming to witness osmosis in 5 different concentrations of sucrose. I will use 5 varying concentrations so that I have a wider spread to compare the results‚ and check that I don’t have any anomalies Prediction Osmosis is the process of diffusion of water molecules from a weaker solution into a stronger solution‚ through a semi permeable membrane. The tiny pores in the membrane
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cell wall surrounding them. When the take up water by osmosis they start to swell‚ but the cell wall stops them from bursting. When they are put in dilute solutions‚ plant cells turn out to be “turgid” (swollen and hard). When the pressure inside the cell increases; No more water can’t enter the cell because the internal pressure of the cell is really high. “When plant cells are placed in concentrated sugar solutions they lose water by osmosis and they become “flaccid”; this is the exact opposite
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categories namely: 1) Major elements account for 99.9% 2) Trace elements account for 0.1% -Of all these elements‚ about 96% of the weight of the body results from the elements such as O2‚ C‚ H and N. -Several of these elements are classified as Minerals‚ which are inorganic elements that are extracted from the soil by plants and passed up the food chain to humans and other organisms. -Minerals constitute about 4% of the human body weight. Nearly‚ ¾ of these are Ca and P‚ the rest is mainly Cl
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1. a. List four cell structures that were common to both plant and animal cells. (4 points) b. What structures were unique to plant cells? (2 points) c. What structures were unique to animal cells? (2 points)--Answer below: a. 1. Rough ER 2. Smooth ER 3. Golgi Apparatus 4. Nucleus b. 1. Chloroplast 2. Cell walls 3. Vacuole c.
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Unit 1. Lab 1. Fixed Line vs. Cellular Debate A cellular network or mobile network is a wireless network distributed over land areas called cells‚ each served by at least one fixed-location transceivers known as a cell site or base station. In a cellular network‚ each cell uses a different set of frequencies from neighboring cells‚ to avoid interference and provide guaranteed bandwidth with each cell. When joined together these cells provide radio coverage over a wide geographic area. This enables
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| 2012 | | Toby Rheinberger Lab Partner: Jeremy Saba | [The Effect of surface area to volume ratio and solute concentration on osmosis.] | The aim of this experiment was to test the effect of surface area on osmosis and the effect of solute concentration on osmosis. To test this aim to hypotheses were devised. 1) If potato pieces are immersed in various salt solutions‚ then the pieces with the greatest surface area to volume ratio will experience the greatest weight change‚ because more
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Lab 12: Meiosis kimberleigh Lewis Biology 1408-63400 Consider the Concepts Experiment: 1. A common misconception about meiosis appears when students identify which of the two divisions converts a diploid cell into two haploid cells. Meiosis I is the division immediately following DNA replication and replication does not occur again before meiosis II. However‚ meiosis I is the "reduction" division when a diploid cell forms two haploid cells. If the DNA duplicated before meiosis I‚ how
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Investigating the effect of different concentrations of glucose on the percent change in mass of Gummy bears according to their respective colours In this experiment osmosis is the main process taking place. Osmosis is the diffusion of water molecules of a solvent which pass through a semi permeable layer and in most cases are due to a concentration gradient meaning that the water molecules travel from an area of low concentration to one of higher concentration. In this investigation‚ gummy bears
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