Trees release oxygen which is a by-product of photosynthesis, and we breathe in oxygen so that our cells can carry out cellular respiration and generate ATP.
Respiration and photosynthesis are biological reactions in the environment that complement each other. Both are similar reactions that occur in a reverse manner. In the process of respiration, oxygen and glucose yield water and carbon dioxide, while carbon dioxide and water yields glucose and oxygen in photosynthesis.
Both respiration and photosynthesis function adequately as living organisms provide carbon dioxide required for plants that undergo photosynthesis and produces glucose. Bacteria and plants release oxygen that is required for all living organisms for respiration.
Differences between Cellular Respiration and Photosynthesis
|Occurs in||All living organisms||Plants, Algae and Photosynthetic Bacteria|
|Reaction||C6H12O6 + 6O2 → 6CO2 + 6H2O||6CO2 + 6H2O → C6H12O6+ 6O2|
|Reactants||Glucose and oxygen||Carbon dioxide, water and light energy.|
|Products||Carbon dioxide, water, and energy(ATP)||Glucose, oxygen and water|
|Oxygen and carbon dioxide||Oxygen is taken in and carbon dioxide is liberated out.||Producing food and capturing energy.|
|Main Task||Breakdown of food particles and releases energy.||Production of food and Energy is captured.|
|Is energy released or required?||Releases energy step by step as ATP molecules.||Requires energy|
|Is Sunlight required?||It is not required since cellular respiration occurs every time.||It is required since photosynthesis occurs only in the presence of sunlight|
|Process||Generation of ATP by oxidation of organic sugar compounds.||Carbon dioxide is taken in and oxygen is liberated out.|
|Breaking down of sugar (glycolysis) that takes place in the cytoplasm|
|Krebs Cycle: Takes place in mitochondria and require energy.|
|Electron carrying chain which converts oxygen into water.|
The equation of cellular respiration is the reverse of photosynthesis. The interchange of oxygen and carbon dioxide by cellular respiration and photosynthesis helps in maintaining both atmospheric oxygen and carbon dioxide stable.