due to the mineral deficiencies within the solute. The tube containing Nitrogen has a very small and weak stem‚ and the tube containing Magnesium successfully grew large green leaves‚ supporting scientific evidence of plants using magnesium for chlorophyll production [later used in photosynthesis]. The tube containing Calcium had stunted and minimal stem and root growth‚ and barely grew at all over the week period. The orange plant in Figure 1 shows darker lines along the middle of the leaves
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Chloroplasts Chloroplasts are food producers of the cell and they make the plant green. They are organelles found in plant cells and animal cells do not have chloroplasts. Also‚ they have a eukaryotic alga that conducts photosynthesis. In a plant cell there can be anywhere from 10 to 100 chloroplasts in one cell. They are approximately 4 to 6 cm in diameter and shaped like a satellite dish with the concave face forward toward the light. Also‚ they are similar to mitochondria but mitochondria works
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pigments‚ if chlorophyll a absorbs blue-violet light‚ chlorophyll b absorbs blue light‚ carotene absorbs blue-green light‚ and xanthophyll absorbs blue light‚ then wavelengths of greatest absorption will be 400‚ 450‚ 500‚ and 450 respectively. Independent Variable: Wavelengths Dependent Variable: optimum wavelengths of light for absorption Standard Variable: method of measurement‚ what was measured Predictions: Chlorophyll a absorbs best at a wavelength of 400‚ Chlorophyll b at 450‚ carotene
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dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct. It produces sugar and other organic compounds such as lipids and proteins. The sugars are then used to provide energy for the organism. Light reaction is the series of biochemical reactions in photosynthesis that require light energy that is captured by light-absorbing pigments; such as chlorophyll‚ to be converted into chemical energy in the form of ATP and NADPH. Light reactions
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OBJECTIVES: The objective of this experiment was to extract plant leaf pigments and determining them by using the Rf values obtained from the paper chromatography technique. The hypothesis of the experiment was that all of the five listed pigments would be present in the extracted plant leaf according to the Rf values. PROCEDURE/APPARATUS: The equipments used were a 18 x 150 mm test tube with stopper‚ graduated cylinders‚ Erlenmeyer flask‚ mortar and pestle‚ metric ruler‚ tall jar‚ acetone‚ tiny
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Life on Earth is dependent entirely on the energy from the Sun‚ not only to keep the planet at a suitable temperature but also to provide the energy required to sustain life. The energy of the Sun‚ in the form of photons‚ is actively captured by chlorophyll and related pigments present in photosynthetic organisms‚ like plants and algae. This captured energy is used to convert carbon dioxide into complex energy-rich molecules that can be used by themselves or other organisms. “Photosynthesis is the
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the plant’s leaves to perform Photosynthesis. Photosynthesis occurs in organelles within plant leaves called chloroplasts. Chloroplasts contain chlorophyll‚ a light absorbing pigment that in different variations absorbs different wavelengths of light‚ as well as other light absorbing pigments like carotenoids and hydrocarbons (Campbell‚ 2008). Chlorophyll a and b along with carotenoids each have a different absorption spectrum that allows them to process a different wavelength of light for photosynthesis
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carotenes and xanthophylls will appear when a solvent‚ made of 9 parts petroleum ether and 1 part acetone‚ goes up Whatman #1 filter paper Purpose. The purpose of this experiment was to demonstrate the presence of carotenes‚ xanthophylls‚ and chlorophylls in leaves. Methods and Materials. A piece of Whatman #1 filter paper was cut to fit into an ignition tube. One end was cut to form a V‚ and the sides of the filter paper were made sure to not touch the sides of the ignition tube. A paper clip
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of gem corn which is produced as a result of selective breeding. Anyways‚ most plants require light in order to grow and conduct photosynthesis. Plants that have been previously grown in the dark are incapable of photosynthesis since they lack chlorophyll and many polypeptides needed for light harvesting. But once they have been exposed to light‚ over time‚ reorganization of the plastid membranes occur and all the required enzymes and proteins needed for photosynthesis appear. So undetectable levels
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Separation and Identification of Plant Pigments by Paper Chromatography Biology 1107L Introduction All living organisms require energy for their chemical processes. The ultimate source of this energy is the sun. Plants convert light energy into the chemical energy of sugars. During photosynthesis pigments are used to capture light energy. Pigments of green plants can easily be separated and identified using a technique called paper chromatography. The purpose of this
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