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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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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Diffusion and Osmosis Experiment Methods/Materials: 7.1 Experiment: Rate of Diffusion of Solutes In the initial set up of this experiment I had 2 sets of 3 screw-cap test tubes that had each been half-filled with 5% gelatin and 1-mL of the correct dye (either potassium dichromate‚ aniline blue‚ or Janus green) in each of the test tubes. I labeled the 3 test tubes of set 1 with which die they contained and marked them “5 ˚C”. Then with the other set I did the same exact thing‚ except I labeled
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Biology GCSE Coursework: Osmosis in Potato Chips Skill Area P: Planning Aim: To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. Hypothesis: Osmosis is defined as the net movement of water or any other solution’s molecules from a region in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially
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Biology 1010 is a course that introduces students to the basic biological phenomena in all living organisms. It focuses on the different molecular levels of organization‚ heredity in evolution‚ genetics and reproduction. Through this course‚ I was able to master three essential concepts such as Mendel’s Law of Segregation‚ enzymes‚ and photosynthesis. Gregor Mendel was an Augustinian monk that argued that parental traits are passed on to their offspring discrete “heritable factors”. Heritable factors
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Biology – HSC Online Extract from Biology Stage 6 Syllabus (Amended October 2002) © Board of Studies‚ NSW 9.2 Maintaining a balance: 1. Temperature range Background: All organisms are adapted to a particular environment with its characteristic temperature range. The temperature range allows the organism’s enzymes to control its metabolism by operating at their optimum efficiency within this range. Some organisms are adapted to live at high temperatures (80 - 100oC) and these are called thermophiles
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Eliza Solomon EE Notes from texts Biology section: Citation: “Evolutionary Psychology: An Introduction‚ Second Edition” by Lance Workman and Will Reader. Cambridge University Press. Printed in 2004‚ 2nd edition in 2008 in the UK. Published in NYC. “The mind‚ therefore‚ is seen as equipped with the species-specified ‘instincts’ that enabled our ancestors to survive and reproduce and which give rise to a universal human nature. This idea is in sharp contrast to the adhered
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Thin film of liquid surrounding soil particle -> dilute solution of mineral salts • Cell sap in root hair -> lower water potential than surrounding soil solution -> separated by partially permeable membrane • Water enter root hair cell by osmosis/active transport • Mineral salts -> diffusion and active transport [pic] How is the structure of root hair cell adapted to its function of absorption? • Elongated protrusion that increases surface area to volume ratio -> increase efficiency
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Potato osmosis report Operators Introduction The purpose of the liberation Liberation is to understand what is happening with the potatoes when it is in the water. To find out how osmosis takes place and what it ’s purpose as well as other examples of osmosis. The experiment is to understand what is happening with the potatoes when they are in the water and understand the osmosis process occurs. Osmosis Background facts Osmosis comes from the Greek "[-mo: ´ s] (new latin osmo ´ sis‚ Greek
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M10/3/HISTX/BP1/ENG/TZ0/XX/S3/M This markscheme is confidential and for the exclusive use of exa miners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IB Cardiff. -3- M10/3/HISTX/BP1/ENG/TZ0/XX/S3/M For the attention of all examiners: if you are uncertain about the content/accuracy of a ca ndidate’s work please contact your team leader. 1. (a) W hat does Source B suggest about the views of
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