contain chloroplasts‚ which convert the energy in light to chemical energy through photosynthesis. The cylindrical shape of palisade cells allows a large amount of light to be absorbed by the chloroplasts. Beneath the palisade mesophyll are the spongy mesophyll cells‚ irregularly-shaped cells that having many intercellular spaces to allow the passage of gases‚ such as the intake of carbon dioxide for photosynthesis to take place. The stomata is the way in which these gases are exchanged‚ as well as
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of carbon cycle and processes involved. Respiration & metabolism Photosynthesis: the process of converting light energy to chemical energy and storing it in the bonds of sugar. Respiration: the release of energy from food and it takes place in animal and plant cells. Combustion: the process in which a substance reacts with oxygen to give heat and light. 5.2.2. Analysis of change in concentration of atmospheric CO2 with records. Mauna Loa Data The red line represents the carbon levels
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stored carbon‚ which was gained during photosynthesis. Photosynthesis is the reverse process of respiration. Cellular respiration requires oxygen (which is the byproduct of photosynthesis) and it produces carbon dioxide‚ which is used in photosynthesis. In this way‚ photosynthesis and cellular respiration are linked in the carbon cycle. Respiration and photosynthesis are essentially the same process‚ just in reverse. Respiration adds CO2 and photosynthesis takes CO2 out of the atmosphere‚ they work in
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Questions 1. Based on what you already know about photosynthesis‚ develop a testable hypothesis to explain the influence of an increase in light intensity on the photosynthetic rate in tomato leaves. 2. What is the relationship between an increase in light intensity and photosynthetic rate in tomato leaves? Does this relationship support the hypothesis that you formulated? As light intensity increases then the rate of photosynthesis increases linearly until a point is reached when the
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SAKARIYAWO COURSE CONTENT: Seed germination and dormancy. Juvenility and senescence. Translocation and respiration in crops‚ role of environmental resources. Water and water stress in plants. Light and solar radiation‚ role of plant nutrients. Photosynthesis‚ plant growth and partitioning of assimilates. Yield limiting factors and yield components. Growth regulators – auxin‚ gibberellins‚ cytokinins etc‚ Plant growth and mearsurements‚ Growth analysis: RGR‚NAR‚LAI etc‚ Plant development: roles of
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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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Heterotrophic reduced carbon compounds as energy sources (carbs‚ fats‚ proteins) 8 ATP (Glycolysis) 30 ATP (Krebs‚ ETC) b) Chemolithotrophic including C1 metabolism > derive energy from oxidation of inorganic compounds > derive cellular carbon from CO2 2) Anaerobic respiration a) Also Heterotrophic and Chemolithotrophic types but does not use up O2 3) Fermentation Usual (SLP-meditated ATP) Substrate-level phosphorylation Results in formation of ATP by direct transfer P to ADP Unusual (PMF-driven
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Cycle uses no oxygen‚ but it can’t go if the ETS isn’t going‚ so it’s O2 dependent. 5. This cycle runs once per pyruvate‚ thus twice per glucose. 6. Per glucose‚ the Krebs Cycle produces 6 CO2 (discarded as waste in animal cells‚ recaptured for photosynthesis in plant cells). C. Electron Transport System (oxidative phosphoryllation) (occurs in the membranes of the cristae of the mitochondria) 1. The hydrogens on the reduced NAD’s and FAD’s are split
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to the 5 carbon sugar rubisco bisphosphate‚ instead of carbon dioxide as in the process of photosynthesis. It is the alternate pathway used by the enzyme. This enzyme being both a carboxylase and an oxygenase does not have the capability to differentiate between the carbon dioxide molecule or the oxygen molecule as a result of which it can assist in both the reaction of photorespiration and photosynthesis‚ even though they are the opposite pathways. In general RubisCO favours carbon dioxide to oxygen
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Lab 11- Plant pigment and Photosynthesis Zelda Salfati December 20th‚ 2012 BIOL 1012Y Partners Lab: Nicole Mintz‚ Bayla Kronman
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