The Production and Uses of Atp Essay

938 Words4 Pages
ATP is synthesised by a reaction known as a condensation reaction. In this reaction, an inorganic phosphate is added to a molecule of ADP to convert it into a molecule of ATP, releasing some water at the same time. This reaction is reversible and as a result, ATP is synthesised during reactions that release energy, whereas it is hydrolysed to provide energy for reactions that require it. Adenosine triphosphate (ATP) has three phosphate groups which are key for the way in which ATP stores energy. The bonds between the phosphate groups are very unstable, therefore they can be broken quite easily, however it is usually the third phosphate bond that is broken. When this bond is broken, a large amount of energy is released and this is used in lots of processes within mammals and plants. ATP is synthesised in several different processes. In plants, ATP is produced in the process of photosynthesis, in the light dependent reaction and it is used the light independent reaction. In the light dependent reaction, a chlorophyll molecule absorbs light energy causing electrons to become excited with the raised levels of energy they contain. This causes two electrons to leave the chlorophyll and they are taken up by an electron carrier where they are then passed down an electron transport chain. Each carrier has a lower energy level than the previous one, causing the electrons to loose energy at each level. This energy is used to combine an inorganic phosphate molecule with an ADP molecule to make ATP, which is then used in the Calvin Cycle. The second stage of photosynthesis, (the light independent reaction), requires a small amount of ATP to function. ATP from the light dependent reaction is used, along with reduced NADP, to reduce the activated glycerate 3-phosphate into two molecules of triose phosphate. Some of the triose phosphate molecules are converted into useful

More about The Production and Uses of Atp Essay

Open Document