water in front of the test tube(containing the pondweed) because the water in the beaker will absorb the heat coming from the light bulb. The plant will not be affected by the heat and due to my previous research it will result in faster rate of photosynthesis and plant will survive longer. Each of my experiments will be 60 seconds long to get decent measurable results. The light source I will be using has a voltage of 35V and will have a beaker of water in front of it‚ and 15cm away front he end of
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rate of photosynthesis using leaf discs. Aim : To measure the effect of light intensity on the rate of photosynthesis in leaf discs. Introduction : The simple concept of photosynthesis is that it can occurs in the presence of light‚ which takes place in the chloroplasts of green plant cells. Photosynthesis can also be defined as the production of simple sugars from carbon dioxide and water causing the release of glucose and oxygen. The chemical equation for photosynthesis can be expressed
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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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The Tyndall effect‚ also known as Tyndall scattering‚ is light scattering by particles in a colloid or particles in a fine suspension. It is named after the 19th-century physicist John Tyndall. It is similar to Rayleigh scattering‚ in that the intensity of the scattered light depends on the fourth power of the frequency‚ so blue light is scattered much more strongly than red light. An example in everyday life is the blue colour sometimes seen in the smoke emitted by motorcycles‚ in particular two-stroke machines
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Doppler effect The Doppler effect‚ named after Christian Doppler‚ is the change in frequency and wavelength of a wave as perceived by an observer moving relative to the source of the waves. For waves that propagate in a wave medium‚ such as sound waves‚ the velocity of the observer and of the source are relative to the medium in which the waves are transmitted. The total Doppler effect may therefore result from motion of the source‚ motion of the observer‚ or motion of the medium. Each of these
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The Effect of Light Intensity The effect of different light wavelengths was tested in the following experiment. The rate of photosynthesis can be affected depending on the light treatment it receives. With the aid of DPIP acting as NADPH in photosynthesis‚ it was possible to observe the reaction as it took place. Samples were created with dark‚ 24 cm‚ 30 cm‚ and 49 cm light treatments. The absorbance was measured in five-minute intervals for each sample and recorded in an appropriate table
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Effects of the Bottleneck and the Founders effect Cecil Smith GS102 Grantham University Online The bottleneck effect happens when something of a great devastation has happened‚ causing a great amount of people to lose their lives and leave behind very few people at the most. The bottleneck effect happens at random and can kill of a whole population and with it can also wipe out the gene pool by doing so. An example of the bottleneck effect would be something like a tsunami‚ or an earthquake‚ which
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Abstract on Determining the Photosynthetic Activity in Plants Using Different Wavelengths of Light using Chromatography and a Spectrophotometer In this experiment‚ the separation of particular pigments‚ contained within a fresh spinach leaf‚ were examined. Paper chromatography is the process of separating certain molecules‚ or pigment molecules‚ based upon their polarity. Four different pigments were examined from the spinach leaf: chlorophyll a‚ chlorophyll b‚ xanthophyll‚ and carotene. Based
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properties were neutralized once combined and allowed for the development of a light blue solution. It is important to notice after this step of the cycle that large amounts of copper sulfate‚ the product‚ can have adverse environmental and ecological effects due to its toxicity. For the fifth and final step of the cycle‚ 0.3004 grams of zinc is used to react with copper sulfate‚ generating zinc sulfate and solid copper. The balanced equation includes CuSO4(aq) + Zn(s) -> Cu(s) + ZnSO4(aq). Since zinc
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Raman Effect : Raman scattering or the Raman effect ( /ˈrɑːmən/) is the inelastic scattering of a photon. It was discovered by Sir Chandrasekhara Venkata Raman and Kariamanickam Srinivasa Krishnan in liquids‚[1] and by Grigory Landsberg and Leonid Mandelstam in crystals.[2][3] When light is scattered from an atom or molecule‚ most photons are elastically scattered (Rayleigh scattering)‚ such that the scattered photons have the same energy (frequency) and wavelength as the incident photons. However
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