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Understanding ATP: The Key to Cellular Energy Storage and Release

Dive into Chapter 8.1 on autotrophs and heterotrophs, the organisms that make their own food or rely on external sources. Explore the vital role of ATP (adenosine tri-phosphate) in storing and releasing energy in cells, with insights on ADP and the mechanisms of energy release. Learn about the essential functions of ATP in muscle contraction, active transport, and protein synthesis. Unravel the intricate process of how cells manage energy through ATP and glucose utilization.

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Understanding ATP: The Key to Cellular Energy Storage and Release

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  1. Energy and Life Chapter 8.1

  2. Autotroph • Organism that makes it’s own food • Ex: plants

  3. Heterotroph • Organism that does not make it’s own food and must obtain energy from the food it eats. • EX. Humans, bugs, and dogs.

  4. tropical birdBy land.nick on Flickr www.flickr.com

  5. ATP • Also known as adenosine tri-phosphate • Principal chemical compound that cells use to store and release energy

  6. ATP • ATP consists of three parts • Adenine group • Ribose(5 carbon sugar) • Three phosphate groups

  7. Storing Energy • ADP- (adenosine di-phosphate) looks just like ATP minus one of the phosphate groups. • When a cell has energy available it just adds the phosphate group to the ADP • This turns ADP into ATP

  8. Releasing Energy • To release energy you have to break the bonds between one of the phosphate groups in the ATP. • In other words you lose a phosphate • ATP turns into ADP

  9. Uses of ATP • You use ATP to: • Contract a muscle • In active transport • In protein synthesis

  10. RECAP • The key to ATP is its third phosphate group and its ability to be added or removed. • Cells only keep a small amount of ATP on hand because it’s not actually good at storing energy, instead we use glucose.

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