LESSON 1: Basic Chemistry
Atoms & Ions | Chemical Bonding | Water | Acid & Bases | Organic Compounds | Carbohydrates | Lipids | Proteins | Enzymes | Nucleic Acids | ATP

 ATP

This molecule is needed when cells require energy. Energy is stored in ATP molecules and is used just like a rechargeable battery - ATP is a charged battery. Once energy is released, ATP is converted to an ADP (adenosine di-phosphate). See animation below:

 

 

ADP can be used later to store energy and reform a new ATP molecule:

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