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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Biology 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
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Experiment 1 Background Diffusion is a process‚ in relation to the spontaneous movement of molecules from an area of high concentration‚ to an area of low concentration down a concentration gradient. It is a type of passive transport method‚ that requires no cellular energy (ATP). This movement occurs‚ until a state of equilibrium has been established on both sides of the membrane. The diffusion of molecules happens at cellular level‚ through a cell membrane via the pores. The cell membrane
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the substances that enter or leave the cell do so through diffusion. Osmosis‚ a type of diffusion‚ is the movement of water across a selectively permeable membrane. In osmosis‚ water diffuses across the area of lower solute concentration to that of higher solute concentration until the solute concentrations of the environment and the cell are equal. Tonicity‚ which is the ability of a solution to gain or lose water due to osmosis‚ results in an environment that is isotonic‚ hypertonic‚ or hypotonic
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Chapter 1. The science of Biology Outline: 1. Properties of life 2. Science a. Scientific Reasoning/method b. Experimental controls 3. Intro to Evolution a. Charles Darwin b. Malthus c. Natural selection d. Examples of evolution 4. Evidence for evolution Terms: Biology: Scientific study of living organisms and how they evolved. Science: Knowledge derived from observation and experimentation carried out to determine
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[pic] Faculty of Science Undergraduate Modular Scheme Session 2010/2011 Semester 2 Level 4 MODULE: LS1180: Genetics and Molecular Biology DATE: 31 May 2011 TIME: 09.30 – 11.30 Instructions to Candidates This paper contains THIRTY-EIGHT questions in FIVE sections: Sections A‚ B‚ C‚ D and E. Answer THIRTY-FOUR questions only Section A: THIS SECTION HAS BEEN WITHHELD BY THE FACULTY Answer ALL THIRTY questions on the MCQ sheet provided Section
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Aerobic Respiration Breaking down glucose to release energy Products are Carbon dioxide and water Diffusion is … the movement of molecules from a region of high concentration to a low concentration until the concentration is equal. Role of a human circulatory system: Diffuse In – oxygen (O2)‚ dissolved food (glucose) and water (H2O) Diffuse Out – carbon dioxide (CO2)‚waste and water(H2O) Respiration – releasing energy in cells Breathing – getting air into and out of your body
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My Investigation on osmosis Osmosis is a special kind of diffusion. While diffusion can describe the movement of any kind of molecule‚ osmosis is only about the movement of water molecules. To show this diffusion I will be using potato discs‚ of the same size and mass‚ in different concentrations of sugar solution to find out whether the mass of the discs increases or decreases depending on the concentration. I predict that when the sugar solution is 0% the mass will increase as there is
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Track 1 P Funk- I like the way this song started off at 0:18. Like I was about to watch a good movie. It also reminded me of the movie Roll bounce with the percussion instrumentation in the background. It was like they were telling a story. Track 2 Mothership Connection- This song gives me a funk vibe as it starts off. Reminds me of a song my mother and her friends use to dance to when I was younger. The instrumentation was nice‚ the guitar‚ trombone‚ and piano I think. Track 3 Unfunky UFO- What
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In this experiment‚ we had to demonstrate the process of osmosis using potatoes‚ and to determine the concentration of the cytoplasm of the potato. To demonstrate this‚ we had 6 test tubes and poured in different sucrose solutions of the following concentrations: 0.0M‚ 0.1M‚ 0.2M‚ 0.5M‚ and 1.0M. Once added in with all the sucrose solutions‚ we added in the 6 cylindrical potatoes of equal diameter and length. Before and after putting it in the potatoes‚ we had to weigh the initial and the final mass
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