Photosynthesis

Plants are the producers for an ecosystem They photosynthesise co2 + h20 and produce energy in the form of carbohydrates and other molecules. Plant absorbs water with their roots from the soil using mineral ions such as nitrate produced by the nitrifying bacteria Hydrolysis of ATP releases energy for processes such as active transport of the nitrate ions (and others such as potassium etc) from the soil into root hair cells, a process that lowers water potential and is used to draw water into the plant from the soil. In leaves, photosynthesis involves the photolysis of water, which involves the attachment of 2 e- to a magnesium ion in chlorophyll and the production of h ions from the breakdown of water. Together with the e-, the h ions are used to reduce NADP in the light-dependent reaction in the thylakoid. The h ions and e- are used to reduce gp to form tp and glucose. H ions also play a role in the production of ATP in the ETC. They are pumped into the inter-membrane space creating a proton gradient that provides energy to combine ADP and inorganic phosphate ions to form ATP