Introduction:
Photosynthesis is the process where plants transform light energy usually from sunlight into chemical energy and its balanced equation is 6CO2 + 6H2O –light energy----> C6H12O6 + 6O2 (Elsevier B.V.,LiveScience). Photosynthesis has major byproducts including water, glucose and starch(which is produced in the plant), and last but not least; oxygen. There are numerous amounts of plants all around the world producing CO2 necessary for human survival. However, the photosynthesis cycle is not visible which results in the plants appearing like they are not doing anything. One way to clearly prove that plants are indeed performing photosynthesis is to observe the plants giving off oxygen; which is one of the most important results of
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(add the number of bubbles for each trial of a light source and divide by 5)
Sunlight 0.2 ml 0.2 ml 0.2 ml 0.2 ml 0.2 ml 0.2 ml
Fluorescent lamp light 0.4 ml 0.4 ml 0.4 ml 0.5 ml 0.5 ml 0.44 ml
Red lamp light 0.2 ml 0.2 ml 0.2 ml 0.2 ml 0.2 ml 0.2 ml
Yellow lamp light 0.2 ml 0.3 ml 0.3 ml 0.3 ml 0.3 ml 0.28 ml darkness 0 ml 0 ml 0 ml 0 ml 0 ml 0 ml
Conclusion: During the following lab, an aquatic plant was covered with a funnel and was placed underwater inside a beaker, with a graduated cylinder (submerged in water) was placed over the neck of the funnel. This lab tested out which source of light which is the independent variable would allow the aquatic plant to produce the most bubbles (dependent variable) and photosynthesize the fastest. This is clearly displayed because when photosynthesis is produced underwater it appears in the form of bubbles inside the water. These bubbles will travel up through the funnel and displace the water in the graduated cylinder. The dependent variable was tested by placing the four, 5cm aquatic plants in the beakers directly in front of the sources of light and observing how many bubbles were produced within the period of 10 minutes and how much water was displaced by the oxygen bubbles. The beaker in front of the light source with the most bubbles produced and with the most displaced water performed photosynthesis faster than all the other light sources. The sources of light used for this lab were sunlight, florescent, red, and yellow lamp lights, and
Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed Aim: To investigate how the rate of photosynthesis changes at different light intensities, with a pondweed. Prediction: I predict that the oxygen bubbles will decrease when the lamp is further away from the measuring cylinder, because light intensity is a factor of photosynthesis. The plant may stop photosynthesising when the pondweed is at the furthest distance from the lamp (8cm). Without light, the plant will stop the photosynthesising process, because, light is a limited factor. However once a particular light intensity is reached the rate of photosynthesis stays constant, even if the light intensity is the greatest.
This meant that this cuvette (tested under light) should display a higher decrease in DCIP due to the reduction in absorbance (dependent variable) opposed to the other cell fractions tested depending on a sixteen minute period (independent variable). The overall goal was to provide proof, through data, that the cell fractions put under the light during the sixteen minute period would indicate a higher set of chloroplast activity versus the ones put in the
Photosynthesis consists of the following equation: Sun light Carbon dioxide + Water = = == == ==> Glucose + Oxygen Chlorophyll Chlorophyll is a substance found in chloroplasts, found in the cells of leaves.
As the light is increased so would the rate of photosynthesis. Apparatus: boiling tube, 250ml beaker, bench lamp, ruler, sodium
Experiment #1: The purpose of this experiment is to investigate the effects of baking soda and light intensity on the rate of photosynthesis of green spinach leave through the observation of floating disk.
In my experiment I am going to see how light affects the rate of photosynthesis. To do this experiment I am going to set up the apparatus as shown in figure 1.
Photosynthesis is one process of energy capture for living organisms. The formula for photosynthesis is 3CO2 + 6H2O + light C3H6O3 + 3O2 + 3H2O. Basically, during this process, light energy is captured and converted into chemical energy, but it goes much deeper than that. First, light is captured by chloroplasts that contain pigments that capture different photons of light and then reflect different colors. The pigments include: chlorophyll, which absorbs blue and red wavelengths but reflect green; phycobilins, which absorbs blue, green, and yellow,
Photosynthetic organisms have the ability to convert solar energy into electrochemical energy. This creates a dynamic relationship between the organisms and the light that they absorb. Although light is required to drive photosynthesis, the photosynthetic machinery can only tolerate so much of it. Excess light may lead to the generation of reactive oxygen intermediates resulting in oxidative damage to the photosynthetic apparatus (Niyogi, 1999). Therefore it is necessary for organisms such as the green algae Chlamydomonas reinhardtii to employ photoprotective mechanisms in order to maintain photosynthetic efficiency and reduce stress caused by excess light.
Plant pigments are molecules which reflect one color and absorb the rest. Plants use this light for photosynthesis which is the process by which plants make their food for energy. The reason for there being more than one pigment in a leaf is because each pigment can only absorb certain wavelengths of light, so leaves have more than one so they can absorb more light for photosynthesis. The pigments used for photosynthesis are found in the thylakoid membranes. Light must pass through the leaf and into the photosynthetic pigments so it can be absorbed. This is the reason why leaves are so thin. They want light to penetrate the leaf and get into the chlorophyll so photosynthesis can occur. If the leaves were to be thick then no light
to find effects of distance of a light source from pond weed has on the amount of oxygen
Photosynthesis is a process in which carbohydrates are formed from carbon dioxide and hydrogen and in this light act as an energy source. End result is also oxygen and some byproducts. It is mainly done by plants not by animals. In photosynthesis plant uses the light taken from the sun for the conversion of carbon dioxide and water to glucose and oxygen. It converts the carbon dioxide taken from the atmosphere to oxygen whereas cellular respiration is opposite to that of photosynthesis. Human inhales oxygen which is produced by those plants and exhale carbon dioxide. In cellular respiration a compound is formed which is known as ATP. It is basically a process in which breaking of nutrients occur to provide humans with energy so that
Photosynthesis is a process of converting light energy to chemical energy and storing it in bonds of sugar. This process occurs in plants and some algae . Plants need only light energy,co2,and H2o to make sugar .
Oxygen is given off as a waste product the process of photosynthesis requires raw materials such as carbon dioxide, radiant energy, oxygen and water. Photosynthesis is the process of making glucose, a carbohydrate that is needed by humans in order to stay sustained with energy. Photosynthesis requires a lot of factors for it to carry out its function effectively, it definitely needs light and in this research task will find out if light is really vitally important for the process of photosynthesis. The more light intensity the plant is exposed to, the effective the photosynthesis role will occur at. There will be different type of variables for this experiment, independent variable would be the light intensity, dependent variable would be the rate of photosynthesis and the controlled variables would be the plant, leaves, and the amount of water. .
According to scientists, photosynthesis is “the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.” ("pho•to•syn•the•sis,")
Photosynthesis is plants taking in water, carbon dioxide, and light to make sugar and oxygen. All producers make oxygen and sugar for the secondary consumers and then the carnivores eat animals that eat the plants. This article explains how Photosynthesis happens in the Chloroplast of the plants organelle, if the Chloroplast wasn't in the plant Photosynthesis couldn't happen. If living things didn't breathe out CO2 then the plants would die and living things would have no way of getting oxygen. This article also proves that without photosynthesis, we would not live long. Photosynthesis can help us get the fresh water we need and make sure we have enough oxygen to