Abstract This study was undertaken to determine the relationship of different wavelengths of light and the rate of photosynthesis in spinach leafs. The rate of photosynthesis was measured every five min under light colors of white‚ green‚ red‚ blue and yellow under a light intensity of 2000 lux. The rate of photosynthesis was measured by the spinach disk method in which we replaced the air from the disks with sodium bicarbonate using a vacuum. Under photosynthesis‚ oxygen‚ a product of photosynthesis
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Research question : How does the different light intensity affect the rate of photosynthesis in plants? Objective : To investigate the relationship between different light intensity (by having the source of light at different distance to the plant discs which is at; 10cm‚ 15cm‚ 20cm‚ 25cm‚ 30cm‚ and 35cm ) and rate of photosynthesis of plant. Introduction : Photosynthesis is the process where light energy is absorbed by green plants to convert the raw materials (carbon dioxide and water) into
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Keeping the type of plant per experiment‚ size of beaker and emission of light constant‚ how does changing the concentration of carbon dioxide affect the rate photosynthesis in plants? Introduction: Photosynthesis is the process through which plants‚ algae‚ and some bacteria convert light energy into chemical energy from carbon dioxide and water‚ producing glucose and oxygen. This process is extremely vital as it the major source of nutrition for all living things on Earth‚ and fuel organisms’ activities
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name “Light and Fire‚” of course‚ many things could come to mind. Yes‚ “Light and Fire‚” are universal and represents or symbolizes many things in human life. Mary Shelley‚ in Frankenstein story narrates light and fire throughout the novel to represent numerous things in life. Light symbolizes knowledge‚ scientific discovery‚ and enlightenment whereas fire is connected with life‚ vital fire or fiery fire that could symbolize as positive or negative effects in life. The presence of “Light” in the
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Light‚ Color and Solutions Effects of Concentration and Cell Path Length on a Solutions Absorbance To examine the relationship between color of a solution and the light it absorbs. When it comes down to it our eyes do a accurate job of depicting and distinguishing colors. The purpose of this experiment is to take that a little farther‚ become more precise. With the use of a spectrophotometer one can determine the wavelength and intensity of the light absorbed. By adding a light source to the
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because blue light has a higher absorbance by plant photosynthetic pigments and has a higher energy wavelength than red light‚ we predicted that juniper needles placed in blue light would photosynthesize faster than juniper needles placed in red light. We measured the rate of change in CO2 concentration due to juniper needles. For each sample‚ we placed the needles into a chamber connected to the CO2 monitor and measured the rate of change of CO2 concentration for 10 minutes under red light and then
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Abstract The primary purpose of this laboratory experiment was to record the effects that light exercise has on different cardiovascular functions such as mean blood pressure‚ cardiac out put‚ and total peripheral resistance by comparing both of the numerical values before and after exercise. Prior to exercise‚ the mean blood pressure (MBP) was 86.8 mmHg with a standard deviation of 7.4. After exercise‚ MBP was 96.3 mmHg with a standard deviation of 9.2. The cardiac output (CO) was 5.3 Liters/minute
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In Joseph Conrad’s Heart of Darkness‚ the juxtaposition of light and dark -- in addition to an abundance of imagery-- serves as a vehicle to understanding Conrad’s tainted view of humanity as deeply flawed. There are reoccurring light and dark images which symbolize the good and evil in mankind. Light represents both goodness and civilized Europe. Ironically‚ the light Europe is the place where the worst people are. Europeans are civilized‚ but inhumane. In contrast the references to darkness symbolize
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There are two contrasting views that light either consists of particles or waves. Light is a perplexing phenomenon puzzled by Ancient Greeks and scientists for years. Even Issac Newton developed incorrect theories on light‚ when he was the inventor and genius behind physics. It has been proved that light can be both a particle and a wave. Human eyes collect light that is reflected from a source. For example‚ the light from a pencil comes from the source of light in the sun and travels to the pencil
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What affect does the concentration of sugar have on the rate of respiration of yeast? Apparatus: 1. Stopwatch with a resolution of 0.001 seconds 2. 4 test tubes 3. 200 ml of yeast in a beaker 4. 200 ml of glucose solution 5. 500 ml of limewater 6. 2 delivery tubes 7. 1 test tube rack 8. 1 water bath set to 37°C 9. 2 pipettes 10. 3 measuring cylinders with a resolution of 1ml‚ ranging from 0-30ml. 11. 200 ml of water Hypothesis: The higher the concentration
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