Objective: To study osmosis in living plant tissue. Biological principles: Water potential is the tendency for water molecules to enter or leave a system by osmosis through a differentially permeable membrane‚ while osmosis is the process in which water molecules move passively from a region of higher water potential to a region of lower water potential through a differentially permeable membrane. Therefore‚ potato cells‚ with their differentially permeable membrane‚ are selected as the medium
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Introduction The main purpose of root canal treatment is the elimination of microorganism from root canal system (1‚2). Microorganisms and their byproducts are regarded as the primary etiological factors of periapical diseases and pulpal necrosis (3‚4‚5). Microbial reduction obtained by mechanical instrumentation‚ irrigation‚ using intracanal medicaments and adequate filling of root canal (6). Failure of the root canal treatment is the result of persisting microorgansims in the root canal system even in well-treated
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In the famous poem‚ Root Cellar‚ author Theodore Roethke uses immensely visual and sensory images. The reader not only experiences going down into the cellar through the intense description‚ but also through the imagery‚ along with a few powerful similes that give life to the root cellar’s contents and creates a sense of awareness for the reader. In the first line‚ the words “dank as a ditch‚” are an example of a simile that brings some clarity to the cellar because now there is something to compare
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Natalia Wierzchon A.P. Biology Lab: 1. Osmosis 09/10/2010 I. Introduction a. Purpose: The purpose of this lab was to observe the diffusion process of water‚ osmosis‚ as well as create an understanding of water potential‚ the basis of osmosis. The experiment proved how water molecules in a solution are able to move from an area of low solute concentration‚ high water concentration‚ to an area of high solute concentration‚ low water concentration‚ diffusing “down” the water gradient.
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In his book‚ Foucault identifies the roots of sexuality back to the 1600s‚ where Christian ideology resulted in an augmented interest in sexuality within families. As sexuality began to intensify throughout society‚ ruling classes began to regulate it by seeking guidance from mentors‚ doctors and pastors that resulted in a massive dissemination of discourse on sexuality. Over time‚ sexuality has become rather significant to individuals‚ something that defines them spiritually‚ physically and socially
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Effect of Osmosis on Egg Introduction: The purpose of this lab was to test the effects of hypertonic‚ isotonic‚ and hypotonic environments on the weight of a shell-less egg. We tested the weight of the egg after thirty minutes in water as well as corn syrup. I hypothesized that when the egg was placed in water‚ it would swell and gain weight because it was in a hypotonic environment. That hypothesis was correct as the egg grew slightly and the weight when up. I also hypothesised that when the egg
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OSMOSIS ASSESSMENT TASK Introduction Osmosis is the net movement of water particles from an area where they are in high concentration to an area of low concentration‚ down a concentration gradient. Hypothesis: Will a high concentration of salt solution affect the mass of a potato chip? Variables Controlled variables: -The sizes of the potato chips. Bigger size of potato chips will weigh heavier and the smaller potato chips will weigh lighter‚ if we don’t use the same size of potato chips
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cells. MATERIALS • compound light microscope • prepared slides (longitudinal sections of onion or garlic root tips) • prepared slides (whitefish blastula or other animal tissue) Procedure PART 1: MITOSIS IN PLANT CELLS 1. Observe a prepared slide of a longitudinal section of onion or garlic root tips. Use low power to locate the region of actively dividing cells near the end of the root. Using high power‚ examine individual cells in the region. Find a cell from each stage of mitosis‚ using
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MONEY IS THE ROOT OF ALL DEVIL Money seems to be the driving force in many people’s lives. However‚ I do not agree that money is the root of all evil. Money in itself is harmless. It is but a medium of exchange in trade. it is the love of money that can lead to evil. Money becomes a person’s master if that person values material possessions above everything else. Many people do not realize that they are enslaved by money. However‚ you know they are when making money is the top priority in
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Root Cause Analysis. Root cause analysis is an effective tool used in many industries‚ including healthcare‚ to establish a key reason that an outcome‚ that was not as anticipated‚ did in fact happen. In other words‚ what was the crucial reason for a specific outcome (Bohannan‚ 2016). Root Cause Analysis (RCA) is not a blaming activity but put in place for improving patient care. This may sound simple‚ but it is not as simple as it appears. There can be many causative factors throughout the many
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