I think you question is a little confused try these answers or ask again. The purpose of respiration is to release energy from food molecules. The purpose of photosynthesis is to use sunlight energy to synthesis glucose (a food molecule).
Oxygen.
Energy... it can b elaborated as when micro-organisms use oxygen for respiration(respire aerobically)they carry out breakdown of glucose into carbon dioxide,water and energy......
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Oxygen that carried via red blood corpuscles are transported to the cells for cellular respiration where in the presence of oxygen aerobic respiration takes place which through oxidization results in the production of ATP (Adenosine TriPhosphate) which in simple terms is called Energy.
Energy, which is stored into ATP molecules and used to drive endergonic reactions.
hetertrophs
Used oxygen (carbon dioxide) and used food (feces).
Photosynthetic bacteria produced oxygen, and as they continued to colonize the earth they produced more oxygen. Eventually all the oxygen sinks became saturated, and this resulted in the Great Oxygenation Event (GOE). Aerobic organisms would late evolve and utilize the free oxygen.
Oxygen. Plants take in Carbon Dioxide and prepare food with the help of sunlight and chlorophyll. Carbon Dioxide is vital ingredient in the process of photosynthesis. Plants do not require Oxygen and so liberate Oxygen to the atmosphere which is used by other organisms for respiration.
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Organisms which need oxygen are called aerobic organisms or aerobes. The oxygen is used in the process of respiration to release energy from food. Organisms which do not use oxygen in respiration are called anaerobic organisms or anaerobes. See: http://en.wikipedia.org/wiki/Aerobic_organism
Food and Oxygen
hetertrophs
Used oxygen (carbon dioxide) and used food (feces).
Producers are plants that give us oxygen, and vegetables and fruits. Producers don't eat other producers and organisms, they only get eaten, or used as food by other organisms.
The products of photosynthesis is used by organisms because they products are glucose and oxygen. Organisms use the oxygen in cellular respiration and the glucose is used for energy.
Oxygen. Plants take in Carbon Dioxide and prepare food with the help of sunlight and chlorophyll. Carbon Dioxide is vital ingredient in the process of photosynthesis. Plants do not require Oxygen and so liberate Oxygen to the atmosphere which is used by other organisms for respiration.
Oxygen is used in every cell of the body. It is a reactant in respiration, which gives us the energy to sustain life. Food + oxygen = carbon dioxide + water. This results in the release of energy.
Respiration. Oxygen is taken in and used by the muscle along with glucose. The product of this reaction is Carbon dioxide
Oxygen is used by cells for the process of respiration. Respiration is the release of energy from food. When this happens using oxygen it is called aerobic respiration: glucose + oxygen ----> water + carbon dioxide + ENERGY IRON
Respiring organisms, these can be from humans such as ourselves to micro-organisms, such as bacteria. There is one 'waste' product of photosynthesis - oxygen, glucose is all used or stored by the plant. Oxygen is not a complete waste, as it is used in plant respiration, however, the oxygen released from the plant can be used in respiration in other organisms.
The oxygen isn't "used by the earth"; it is recycled by organisms. The total amount of oxygen on planet Earth remains more or less constant.