Cellular respiration is the overall relationship between
autotrophs and
heterotrophs. Autotrophs are organisms that produce their own food through the process of photosynthesis, whereas heterotrophs are organisms that cannot prepare their own food and depend on autotrophs for nutrition. These two categories of living things work in coordination between photosynthesis and respiration as they both produce products that the other process utilizes.
Cellular respiration happens when a cell takes glucose and oxygen and uses it to produce carbon dioxide, energy, and water. This transaction is important not only for the benefit of the cells, but for the carbon dioxide output provided, which is key in the process of
photosynthesis. Without respiration, actions necessary to life, such as metabolic processes and photosynthesis, would cease. Ecosystem respiration is typically measured in the natural environment, such as a
forest or
grassland, rather than in the laboratory. Ecosystem respiration is the production portion of
carbon dioxide in an ecosystem's
carbon flux, while
photosynthesis typically accounts for the majority of the ecosystem's carbon consumption. Carbon is cycled throughout the ecosystem as various factors continue to uptake or release the carbon in different circumstances. Ecosystems take in carbon through photosynthesis, decomposition, and ocean uptake. Ecosystems return this carbon through animal respiration, and plant respiration. This constant cycle of carbon through the system is not the only element being transferred. In animal and plant respiration these living beings take in glucose and oxygen while emitting energy, carbon dioxide, and water as waste. These constant cycles provide for a influx of oxygen into the system and carbon out of the system. == Importance ==