What Photosynthesis is about:
Almost all life forms on Earth are powered by the energy that our sun provides. However, we cannot directly absorb the energy from the sun and hope to perform our bodily function. Instead, we rely on the works of autographs such as plants, algae, and some protists to convert the sun’s energy to two useable sources of fuels for virtually all organisms on Earth: carbohydrates and oxygen molecules. The process of light energy conversion into useable chemical energy is referred to as photosynthesis.
Although there are variations between organisms, and even within the plant kingdom, the general process for photosynthesis involves the conversion of carbon dioxide and water into carbohydrates such as sugars while releasing oxygen as a waste product.
The following can be seen as a general equation for the photosynthetic process:
This equation, however, can only summarize oxygenic photosynthesis performed by photoautographs. Some organisms are able to utilize an alternate electron donor (for example, using H2S instead of H2O) and still other organisms do not release oxygen during photosynthesis.