Effect of Osmosis on Potato Aim: To investigate the effect osmosis has on potato pieces that are placed in different concentrations of sugar solutions in water. Hypothesis: I believe that the more saturated the solution is the lighter the potato will be‚ and the potato in the clear water will weigh more after being left in the solution over a 24 hour period. This is because the cell membranes in the potato act as semi permeable membranes (meaning that they only allow certain molecules through)
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Aim: My objective is to plan and conduct an experiment from which I should be able to draw a firm conclusion that will either prove or disprove any predictions I make. This essay aims to assess and investigate the effect of various solution concentrations on the activity of osmosis in plant tissue. Background scientific theory: Plants exchange gases (CO2 and O2) in maintaining vital respiratory processes
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Why is diffusion of innovation and technology important? When I think of diffusion of innovation and technology‚ I think of evolution or how a product‚ idea or theory goes from a thought in someone’s mind to an actual working process and then through time develops into better products to meet society’s needs and wants. Many times certain societies have a special trait‚ characteristic or ability that enables them to be great at certain types of technology or maybe they produce certain products that
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are the carbohydrate profiles of the organisms you tested? (2) The yeast carbohydrate profile came out with glucose and fructose positive and Mannitol negative. The staph epidermidis was glucose‚ lactose and sucrose positive and mannitol negative. 3. Why is it important not to incubate the fermentation tubes more than 24 hours?(1) Because the sugar test will have a higher chance that the color will change and could alter the
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Science and Engineering Experiment 1: Projectile Motion Physics Lab Report 3 OBJECTIVE The objective of the experiment is to measure the speed at which a projectile leaves a spring gun and to predict the landing point when the projectile is fired at a nonzero angle of elevation. EQUIPMENT Spring gun Metal ball Protractor Meter stick Ruler Whiteboard markers THEORY Projectile motion is an example of motion with a constant acceleration. In this experiment‚ a projectile will be
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The purpose of this lab that was completed was to observe standing wave patterns in clamped strings‚ and understand the effect of the standing wave frequencies of changing the length (L)‚ tension (T)‚ and linear density (p) of the strings. Standing wave patterns in strings are observed at certain excitation frequencies for special values of L‚ T‚ and p. A standing wave can be defined as a vibration of a system in which some particular points remain fixed while others between them vibrate with the
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Osmosis in Potato Tubers Andrew Dickson Background When a plant cell is bathed in a solution of the same concentration (isotonic) as its intracellular environment‚ its mass and volume remain the same. This is because water enters and leaves the cells at the same rate. There is no net loss or gain of water by osmosis. Samples of cells can be placed in a range of solutions of different concentration. The cells will gain water by osmosis when placed in solutions which are more dilute (hypotonic)
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Introduction In this experiment‚ I measured the impact of two different topical chemicals on growing bacteria over the course of a week. Bleach‚ water‚ hand sanitizer and hand soap were all variables used to observe the effects of the bacteria swabbed from my palm and fingers. Bleach has been the go to product for killing germs and it is because of the similar effects it has with high temperature on the proteins in bacteria. I hypothesized that bleach would be the most efficient way for killing the
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Introduc on Lab 3 Introduc on to the Microscope 33 34 Lab 3: Introduc on to the Microscope Concepts to explore: x x x x x Types of microscopes Parts of a microscope How to use a microscope Preparing a wet mount slide Depth of eld Introduc on Some objects are far too small to be seen with the human eye. However‚ by using a microscope many can be viewed in great detail. There are many types of microscopes that range from low–level magni ca on (i.e.‚ hand held magni ca on lens) to
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an effective access control solution for information systems? Identification‚ Authentication‚ and Authorization 2. What two access controls can be setup for a Windows Server 2003 folders and authentication? Authentication and Access control. 3. lf you can browse a file on a Windows network share but are not able to copy it or modify it what type of access controls and permissions are probably configured? What type of Access Control would best describe this access control situation? List
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