Photosynthesis and respiration include many Redox reactions, in which one compound loses one or more electrons and another gains it/them.
Photosynthesis is conversion of light energy into chemical energy. The electron transfer is a light driven and it is a redox reaction since it involves a path of chain of reactions involving electron transfer.
It uses energy to reduce CO₂ And to form glucose. When water molecules split, then sugar is formed due to the transfer of electrons from water to carbon dioxide i.e. electron lost by a compound is gained by other. It is an important phenomenon for the survival of life on the earth.
Respiration is also a redox reaction involving oxidation- reduction of a set of metabolic reactions. There lies a gain and loss of electrons simultaneously.
Glycolysis involved in Respiration is a ten-step process of Redox reactions that converts Glucose into Pyruvic acid. Also, Two NAD+ are reduced to become NADH.
Learn more about Redox Reaction here, https://brainly.com/question/13293425
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