Risk Assessment Method 2 DATA COLLECTION and PROCESSING * 2.1 Recording Raw Data Quantitative Data Qualitative Data 2.2 Processing Raw Data Statistical Processing - calculations 2.3 Presenting Processed Data Result (s) table (s) Graph (s) 3 CONCLUSION and EVALUATION * 3.1 Conclusion Conclusion statement Conclusion explanation 3.2 Evaluation Procedures Reliability Limitations / Weaknesses / errors in Laboratory Investigation Significance of weaknesses on experimental
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pressure inside the tube will be changed as the presence of transpiration. This can be detected by the pressure sensor and the data will be collected by the data logger. It is reminded that the slope of the graphs is the rate of the transpiration. Results: Graph :The Pressure Change with time in different environmental Expt. Condition Time/min Slope 1 Ambient 0-10 -0.061 2 Ambient + Fan 10-20 -0.076 3 Ambient + Lamp 20-30 -0.070 4 Lamp + Fan
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from a more to a less concentrated area. Meaning if there was more oxygen on one side of the membrane and the membrane was permeable to oxygen‚ the oxygen would pass through to the side of less oxygen. Osmosis is the movement of water across a selectively permeable membrane. Diffusion and osmosis is important for organisms because our nutrients‚ oxygen‚ and etc.‚ need diffusion to go through compartments. I predicted that the more the concentrated the alcohol solution was the mass would increase
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research question must state which factor‚ the name of the enzyme and the reaction it catalyses. Hypothesis: write a hypothesis based on your knowledge of the topic. This means what you expect to happen in the experiment. You can include a sketch graph if it is relevant. Identifies variables: Variables are factors that can be measured and/or controlled. You must state what variable you are changing‚ this is the independent variable (x). When you change the independent variable the dependent variable
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mass before and after. Due to osmosis the potato cores will change in mass to make the concentrations at an isotonic level‚ helping us to work out the mass of the potato. I predict that potato in the weaker solutions will gain mass‚ because some water will be absorbed by the potato to make the concentrations isotonic. Similarly‚ I think the potato in the stronger solutions will lose mass as they will have to lose water to dilute the stronger solution. Osmosis: Osmosis is the diffusion of water across
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TABLE OF CONTENT Task C1 C2 C4 C5 C6 C7 C8 E3 Title Osmosis in Living Tissue Catalytic Activity of Enzyme Action of Electricity on Substances Encountered in Daily Life Do All Conductors Obey Ohm’s Law? Composting Bioreactor Sunglasses’ Protection from Ultraviolet (UV) Radiation Extracting DNA from Fruits How Cross-linking Changes the Properties of a Polymer Integrated Science Sample SBA Task Practical Related Task – C1 Osmosis in Living Tissue Student Handout (Version 1) Purpose To determine
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BIOLOGY OSMOSIS LAB REPORT 1. Research Question/ Aim How do the different sodium chloride concentrations of solutions affect the length (measured in mm) and mass (measured in grams) of potato cores placed in them overnight (approximately 10 hours)? 2. Hypothesis Alternative hypothesis: As the concentration of sodium chloride in the solution increases‚ the mass of the potato cores will decrease. If the solution they are in has a lower water potential than the potato cores‚ there will be
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the sultanas in sample 3. 32.4 g – 25 g = 7.4g (7.4 / 25) = 0.296 0.296 x 100 = 29.6 % b) The change in mass of the sultanas was caused by the movement of water. i) Name this process. Osmosis ii) Explain the results in terms of water concentrations. The water moved from an area of high water concentration outside the cell to an area of low water concentration inside the cell. 1. Continued c)
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AP BIOLOGY CELL UNIT ACTIVITY #5 NAME_____________________ DATE___________HOUR_____ CELL TRANSPORT MEMBRANE PROPERTIES PASSIVE TRANSPORT CHARACTERISTICS: DIFFUSION: Cell Unit Activity #5 page 1 OSMOSIS : ISOTONIC ANIMAL CELLS Cell Unit Activity #5 page 2 HYPOTONIC HYPERTONIC PLANT CELLS OSMOREGULATION – ADAPTATIONS Paramecium Fresh Water Bony Fish FACILITATED D IFFUSION: Cell Unit Activity #5 page 3 Marine Bony Fish ACTIVE TRANSPORT CHARACTERISTICS:
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and the wages earned by people being higher‚ it allowed for families to have more money to spend on things they needed or wanted in their homes. Some of the new things being purchased by families for their homes were many different new toys (Mr. Potatoe Head)‚ appliances‚ televisions‚ or the computer modem. In the second image provided below you can see a family sitting and watching their brand new television set that they just purchased. During this time‚ toys and televisions were very popular
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