1.8 ATP Flashcards
1
Q
What is ATP?
A
• Adenosine triphosphate
• Nucleotide derivative
• Ribose bound to 1 adenine base and 3 phosphate groups
2
Q
How is ATP broken down?
A
• ATP hydrolysed into ADP + Pi, using a water molecule
• Catalysed by ATP hydrolase
3
Q
How is ATP resynthesised?
A
• ADP + Pi condensed into ATP, releasing a water molecule
• Catalysed by ATP synthase
4
Q
What are some properties of ATP?
A
• Rapidly resynthesised
• Releases energy in small manageable amounts so little energy lost as heat
• Easily broken down in one step so releases energy instantaneously
• Phosphorylates other compounds, making them more reactive
• Polar so can’t leave cell
• Small and soluble so easily transported round cell
