biology

respiration is the how a living organism gets energy, the energy is used for many things, such as movement, making new substances, growth and repair, active transport, nerve impulses and heat. energy is made from eating energy rich substances like fat and starch, those substances are broken down by the digestive system into smaller molecules like glucose, those digested molecules are absorbed into cells. Respiration takes place in the cell cytoplasm, glucose is broken down inside the cytoplasm which creates co2 and water, whilst releasing energy at the same time. Plants get their energy by light, most of the light energy is transferred to the energy rich substances of glucose and starch, these substances are broken down and are used to release energy when the plant requires it. Plants need energy just as much as animals do, Plants and animals release energy for cell reactions, this process occurs all the time in plants and animals. The reactions inside the cells need enzymes to carry them out, the enzymes help control the when the energy is released. When a cell does not need much energy, the enzymes are stopped from working