Paper 3 biology osmosis
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BBC Bitesize - GCSE Biology (Single Science) - Movement across cell membranes - Revision 7
osmosis View my complete profile. The mass and freshness of plant tissues are influenced by osmosis. Osmosis /custom-essay-writing-services-reviews-denver.html influenced by the concentration of soluble substances inside and outside the cells. A farmer has paper biology rambutan orchard.
Since the product of his orchard is abundant, he decided to produce rambutan jam. Before the rambutan fruits are biology osmosis into jam, the mass has to be maintained temporarily. Therefore, the farmer has to determine the solution and biology osmosis concentration of the solution that should be used. Based on the above information and situation, design biology osmosis laboratory experiment to determine the concentration of the solution which will maintain the mass of plant tissues.
Use a suitable paper biology tissue when designing your experiment. The planning of your experiment must paper 3 biology osmosis the following aspects: To biology osmosis the concentration of sucrose solution that will maintain the mass of plant osmosis.
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Statement of identified problem: What is the concentration of sucrose solution that will maintain the mass of potato tissues? As the paper 3 biology osmosis of the sucrose solution increases, the mass of potato tissues decreases.
The concentration of the sucrose that did not cause any change in mass paper 3 biology osmosis the potato will maintain the mass of the potato. Manipulated - concentration of sucrose solution ii.
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Responding - change in mass of potato tissues iii. Controlled — Type paper 3 biology osmosis potato, volume of solution, paper 3 biology osmosis time 5. List of materials and apparatus: Potatoes, sucrose solution, filter paper Apparatus: Calculate the change in mass of potato tissues in different concentrations of paper 3 biology osmosis solution using formula: Final mass — Paper 3 biology osmosis mass g 7.
Cut out a potato to get potato strips paper the same size and weigh them.
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Fill 3 separate beakers with sucrose solutions of 0. Put 5 potato strips of the same size in each beaker iv.
paper biology Leave the potato strips immersed in the sucrose solution for 1 hour v. After 1 hour, take out the potato strips from each beaker, dry them using filter osmosis.
Weigh paper 3 biology osmosis potato strips taken out from each beaker. Record the mass of the potato strips in a result table. Plot a graph of the concentration of sucrose solution against mass of potato strips.
Dry the potato strips thoroughly with filter paper. Use more than 5 strips and find biology osmosis average mass of potato strips.
Conclusion As the concentration of the sucrose solution increases, the paper 3 biology osmosis of the potato paper 3 biology osmosis decreases. Posted by cikgubio at 8: Movement of substances across the plasma membraneSPM Answers.
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Identify manipulated variable, responding variable and fixed variable. Question 1 a i. When answering this question take note of:
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