Exploring Enzymes - Ground-Up Tissue Activity Abstract Our experiment looked at how increasing the surface area of a substance affects the amount of bubbles created due to the presence of the enzyme catalase. The experiment used two pieces of fish‚ one whole and one ground up‚ which were then covered in hydrogen peroxide. This method allowed us to observe the catalase in ground up fish break down the hydrogen peroxide at a quicker rate than in the piece of fish left intact. This was determined
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Group: _______________________________________ 1) Five equilateral triangles‚ each with side length are arranged so they are all on the same side of a line containing one side of each. Along this line‚ the midpoint of the base of one triangle is the vertex of the next‚ as shown in the diagram below. What is the area of the region that is covered by the union of the five equilateral triangular regions? Answer: Question Attempt 1 Attempt 2 Attempt 3 1 Triangles
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Effects of Agriculture on the Environment Introduction: Agriculture has changed dramatically‚ especially since the end of World War II. Food and fibre productivity rose due to new technologies‚ mechanization‚ increased chemical use‚ specialization and government policies that favoured maximizing production. These changes allowed fewer farmers with reduced labour demands to produce the majority of the food and fibre. Humans‚ like all other species‚ exploit their surroundings for the resources they
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Business Challenge #6: To develop the best scratch resistant coating in the world for ophthalmic lenses [Titan] Background The ophthalmic lenses (spectacle lenses) consist of some base material (substrate) like CR 39‚ Polycarbonate‚ Trivex and a surface treatment is given to them to increase their hardness. Currently‚ there are 2 processes of applying this coating‚ i.e. Dip coating and Spin coating. The current scratch resistant (Hard) coating on plastic and polycarbonate lenses available in the
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effect of the surface area to volume ratio on the rate evaporation of water in different sized containers. By measuring the time it takes for the whole amount of water to evaporate‚ a conclusion can be made about the validity of the surface to volume ratio in regards to the biological process of diffusion. Research Question: What is the effect of the surface area to volume ratio on the evaporation of water? Variables: - Independent: o Surface area in cm2 of the top most surface of water in the
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at least have to pick r and h such that pi r^2 h = 355. That means h = 355 / (pi r^2). The surface area of a cylinder is the top (pi r^2) plus the bottom (also pi r^2) times the lateral side (2 pi r h). So the total surface area is 2 pi r^2 + 2 pi r^2 + 2pi r h‚ or 4 pi r^2 + 2 pi r h. Substitute h = 355 / (pi r^2) into this to get the surface area in terms of just r. Now that you have the surface area in terms of just r‚ you can find the value of r that minimizes this by taking the derivative
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| | | | | | | | | The Erosion Process1. Water. Erosion from water typically occurs in the following ways. a. Raindrop Splash and Sheet Erosion. The first step in the erosion process begins as raindrops impact the soil surface. Raindrops typically fall with a velocity of 20-30 feet per second. The energy of these impacts are sufficient to displace soil particles as high as two feet vertically. In addition‚ the impact of a rainfall on a bare soil can compact the upper layer of
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Properties Henry Hartono Gunawan 1 INTRODUCTION The use of Greywater for landscaping irrigations is becoming common as Western Australia is experiencing the water restriction due to the current drought condition and critically low level surface water storage. Hence‚ the reuse of Greywater can utilise the on-site resource‚ conserve the water efficiently‚ and reduce the load on wastewater disposal system. As there is still lack of information regarding the effect of surfactants‚ which are
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large scale schemes are necessary for soil reclamation in ravines and badlands of Madhya Pradesh‚ Uttar Pradesh‚ Gujarat and Rajasthan. Several such schemes involving plugging of gully mouths‚ construction of bunds across the gullies‚ leveling of surface‚ a forestation‚ and restriction on over grazing are under implementation in these states. In Madhya Pradesh the World Bank has given an assistance of Rs. 300 million to reclaim about 1 lakh ha of ravine land. (ii) Control of Floods-In India the problem
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LOOK AT PAGE 9 IN NEW TEXTBOOK FOR DIAGRAM Definitions: Evaporation-Process by which liquid water is transformed into water vapour. Evapotranspiration-The total amount of moisture removed by evaporation and transpiration from a vegetated land surface. Base Flow-Slow transfer of water through rocks. Infiltration-The passage of water into the soil. Takes place relatively quick at the beginning of a storm but as the soil becomes saturated infiltration rates fall rapidly. Interception-When vegetation
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