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Photosynthesis for Kids
Fun Photosynthesis Facts for Kids
Kramer DM, Avenson TJ and Edwards GE (2004) Dynamic flexibility in the light reactions of photosynthesis governed by both electron and proton transfer reactions. Trends in Plant Science 9: 349–335.
Schematic drawing showing part of a chloroplast. The thylakoid membrane contains the major protein complexes of the photosynthetic machinery responsible for light absorption and electron and proton transfer. The reactions of the thylakoid membrane drive the C3 photosynthetic carbon reduction cycle that takes place in the chloroplast stroma. Illustrated is the concept of light‐driven linear electron flow coupled with the accumulation of protons in the thylakoid lumen, which is in turn used to drive ATP formation by the ATP synthase. In addition to the energy stored in ATP formation, energy derived from absorbed light is stored by the reactions of the thylakoid membrane in the formation of NADPH. Photosynthetic carbon reduction is shown as a three‐stage cycle. (1) Carboxylation: a molecule of carbon dioxide is covalently linked to a carbon skeleton. (2) Reduction: energy in the form of NADPH and ATP is used to form simple carbohydrate. (3) Regeneration: energy in the form of ATP is used to regenerate the carbon skeleton for carboxylation. Key: PS II, photosystem II; PS I, photosystem I; PQ and PQH2, plastoquinone and reduced plastoquinone; cyt, cytochrome; FeS, Rieske iron–sulfur protein; PC, plastocyanin; Fd, ferredoxin; FNR, ferredoxin‐NADP reductase.
Easy Science for Kids Photosynthesis: How Plants Make Food and Energy
Although photosynthesis is driven by light, the photosynthetic apparatus must protect itself from excess solar energy which causes a decrease in photosynthetic efficiency.
Photosynthesis is the process that enables higher plants, algae and a broad class of bacteria to transform light energy and store it in the form of energy‐rich organic molecules. In plants and algae, as well as some species of bacteria, photosynthesis removes carbon dioxide from the atmosphere, produces the molecular oxygen we breath and stores energy in biomass. In addition some bacteria use light energy to create energy‐rich molecules, but do not split water to produce oxygen. Photosynthesis is finely regulated to avoid damage caused by excess solar energy. At the same time, though, this regulation also decreases the efficiency of photosynthesis. Current research is aimed at understanding these responses to improve photosynthetic efficiency, thus increasing the production of food and fuel.
Artificial Photosynthesis: Saving Solar Energy for a …
Malkin R and Niyogi K (2000) Photosynthesis. In: Buchnan BB, Gruissem W and Jones RL (eds) Biochemistry & Molecular Biology of Plants, pp. 568–628. Rockville, MD: American Society of Plant Biologists.
Algae are a very diverse group of predominantly aquatic photosynthetic organisms that account for almost 50% of the photosynthesis that takes place on Earth. Algae have a wide range of antenna pigments to harvest light energy for photosynthesis giving different types of algae their characteristic colour. Early work done with algae contributed much to what is presently known about the carbon dioxide fixation pathway and the light harvesting reactions. The processes of photosynthesis in algae and higher plants are very similar. From among the three types of carbon dioxide‐concentrating mechanisms known in photosynthetic organisms, two types are found in different types of algae. Algae are proposed to play a role in the global carbon cycle by helping remove excess carbon dioxide from the environment. Recently, algae are recognized as a promising biodiesel source due to its efficient absorption and conversion of solar energy into chemical energy.
Chemistry for Biologists: Photosynthesis
NOVA - Official Website | Illuminating Photosynthesis
Photosynthesis is the process in which green plants use sunlight to make their own food
chloroplast | Function, Location, & Diagram | …
International journal for photosynthesis research. Subscription information, samples, and article information.
Photosynthesis | Definition of Photosynthesis by …
01/02/2013 · Feature open Artificial Photosynthesis: Saving Solar Energy for a Rainy Day
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