ATP (adenosine triphosphate) Flashcards
What are the components of atp?
adenine, ribose and 3 phosphate groups
What is adenine?
A nitrogenous base
What is ribose?
A 5 carbon sugar
Why is ATP called a nucleotide derivative?
Because it is modified to form a nucleotide
Is atp a small molecule?
Yes atp is a small relatively simple molecule
What is the function of ATP?
To power most energy requiring cellular reactions
What is the ATP hydrolysis equation?
ATP+H2O –> ADP+Pi (+energy)
Why is energy released during ATP hydrolysis?
Due of one of the phosphate bonds being broken
What is the energy released in ATP hydrolysis used for?
To perform work inside the cell
What is the ATP hydrolysis reaction catalysed by?
ATP hydralase
When does ATP hydrolysis occure?
When a cell needs energy
What is energy coupling?
The hydrolysis of ATP can be coupled to other reactions within cells that need energy. This is so that the energy released goes directly into these cells.
What is phosphorilation?
The inorganic phosphate Pi released in ATP hydrolysis can be used to phosphorilate other compounds, often making them more reactive.
What is the equation for the resynthesis of Atp?
ADP+Pi (+energy) –> ATP+H2O
How is ATP resynthesized?
By the condensation of ADP and an inorganic phosphate
