ATP in Photosynthesis

This is an introduction to the concept of ATP, a key molecule in many areas of biology. Here, we liken ATP to a rechargeable energy currency. ATP is the currency used by cells, but it is not the energy we get from food. Food energy cannot be directly used to power cells; instead it is broken down and that energy is harnessed to recharge "spent" ATP molecules.

ATP is recharged in a cycle. It's high energy form is called ATP and stores energy within its bonds. After the molecule has had some of the bonds broken, it releases energy and becomes its low energy form called ADP. ADP can be "recharged" through the process of cellular respiration for later use.

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[BOGObiology]. (2015, June 19). Photosynthesis 1 ATP Introduction. [Video File]. Retrieved from    • ATP in Photosynthesis