Enzymes lower the amount of energy needed in a chemical reaction. This happens because enzymes are catalysts‚ so they speed up the activation rates that occur in living organisms. Without enzymes‚ it would be difficult to break down particles like food in the digestion system. Enzymes are all very specific to what chemical reactions they will work with‚ and the temperature‚ pH‚ and salt concentration have to be a specific levels in order for the enzyme to function. The structure of each enzyme has
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that will affect it’s rate. The rate of diffusion will vary depending on the size of the particle. For example‚ a smaller particle will move faster than a large molecule at a given temperature . During reactions‚ when there is more energy‚ the reaction will take place at a faster rate. An increase in temperature will result in and increase in the amount of energy available‚ therefore the particle will move faster and the rate of diffusion will increase. Another factor affecting the rate of diffusing
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temperature 32oC. Once the temperature was beyond the optimal level‚ the rate began to decline and this was represented by the concave curve on figure 5 and 7. This was because as the temperature increases‚ the frequency of collisions between the enzyme and the substrate also increased hence faster reaction rate. Whereas‚ the enzymes operated slowly at low temperature as there wasn’t sufficient energy for the substrates to move at a fast rate‚ hence decreased the number of collisions with the enzymes. However
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Examination of How Different Colours of Light Affect The Rate of Photosynthesis INTRODUCTION Plants are an essential part of the food chain required by all living things to survive. The growing world population and subsequent alteration to the natural environment has placed increased pressure on available plant resources. This is particularly evident in the area of agriculture‚ where optimum crop productivity is important to meet the increased demand for food by the growing world population
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experiment conducted by Claire Dunne‚ Eilis Brien and myself about the effects of light intensity‚ representing the three seasons of summer‚ spring‚ autumn and winter‚ on the transpiration rate of mangrove shoots. Abstract: The overall aim of this report was the conduct an experiment based how different light intensity levels‚ representing the four seasons in a year: summer‚ spring‚ autumn and winter‚ affects the transpiration rate in a mangrove plant. To do this we had to set the 4 different beakers at
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Investigating the Effect of Light Wavelength on the Rate of Photosynthesis Method Take a 250cm3 beaker and fill it with distilled water. Use distilled water so there are no impurities to disrupt photosynthesis. Then take x cm’s of elodia and put it in the beaker. Cover the elodia with the large end of a funnel and the tip of the funnel cover with a test tube. Then direct a light onto this experiment. Measure the amount of bubbles that come from the elodia for x minutes. A prediction
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Investigation of the effect of light intensity Equipment: * Data loga * Light sensor * Bulb * Metre ruler X3 Variables: Independent variable – distance of the light sensor from the light source (m) Dependant variable – intensity of light (lux) Control | Why it needs to be controlled? | How will you control it? | Bulb | There are different watts in different bulbs | Use the same bulb‚ but if your one does break half way through the experiment you can use another bulb with the
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What Factors Affect the Rate of Photosynthesis in living leaves? Abstract: In this lab‚ four different types of leaves were tested to see the rate at which each leaf photosynthesized. This lab demonstrates how plants store light‚ capture light‚ and use light as energy for reproduction and growth‚ by photosynthesis. The control in this experiment was spinach‚ which was tested before any of the other plants were. The other plants that were tested were English Ivy‚ C4 Plant‚ and a multicolored
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reactants. The reaction rate is slower when the reactants are large and complex molecules because it takes longer for the molecules to combine together creating a chemical reaction. More than 2000 years ago‚ Democritus‚ who was a philosopher from Greece suggested that matter is made up of tiny particles too small to be seen. He thought that if you kept cutting a substance into smaller and smaller pieces‚ you would eventually come to the smallest possible particles. The rate of a chemical reaction
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Title: Rate of Photosynthesis Introduction: Photosynthesis occurs in plants where the light energy changes to chemical energy. This process occurs in the chloroplast of the plant cell in order to have gas exchange in the organism. Purpose: To measure the effect of light intensity on the rate of photosynthesis in the leaf cells. Hypothesis: The higher the concentration of the sodium bicarbonate solution‚ the faster the leaf of the plant will rise to the surface of the water in the beaker‚ the
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