ATP Flashcards
What is ATP’s structure?
it is a nucleotide derivative formed from a molecule of ribose, adenine and 3 phosphate groups
What is the difference between a nucleotide and ATP?
ATP has 3 PI but a nucleotide has 1
Energy released from glucose occurs when?
respiration
What is the name of the process of forming/resynthesising ATP?
condensation reaction of ADP and PI
Resynthesis of ATP? (4 marks)
- energy supplied from respiration
- condensation of ADP and PI
- catalysed by ATP synthase
- during photosynthesis and respiration
To start the resynthesis of ATP what is needed?
energy from respiration
During which 2 processes does the resynthesis of ATP occur?
photosynthesis and respiration
Hydrolysis of ATP? (3)
- this releases energy for cells
- catalysed by ATP hydrolase
- bond is broken and ADP and PI formed
What can the hydrolysis of ATP be used for?
it can be coupled to energy requiring reactions within cells e.g active transport, muscle contraction, metabolic processes like protein syth & starch form
What can the PI released during hydrolysis of ATP be used for?
phosphorylate other compounds making them more reactive
Why is ATP a better energy source than glucose?
- ATP produces energy in more controlled manageable quantities
Energy release is faster, 1 reaction but gluc is a series
ATP mobility?
mobile molecule that is soluble and can diffuse out of mito to other parts of the cell so other organelles can use
Why is ATP an immediate source of energy?
it cannot be stored due to its unstable bonds so it is continuously made within mitochondria of cells.
