3. ATP Flashcards
Name 3 things in which plants and animals need ATP?
Active transport
DNA replication
Cell division
Process which releases energy from glucose ?
Respiration
But cell can’t get energy directly from glucose so in respiration energy released from glucose is used to make atp
Structure
Adenine
Ribose sugar
3 phosphate groups
Nucleotide derivative- modifier form of nucleotide
Where is atp stored once it has diffused into cell that needs energy ?
High energy bonds between the phosphate groups.
Released In hydrolysis reactions
Hydrolysis of ATP
So when energy is needed by a cell, ATP broken down into ADP and Pi.
Molecule of water breaks phosphate bond.
Energy is then released
Catalysed by ATP hydrolyse
Structure of ADP+Pi
Adenine
Ribose sugar
ADP and Pi
ATP hydrolysis can be coupled to other energy requiring reactions in the cell, what does this mean ?
The energy released can be used directly to make the couple reaction happen rather than being lost as heat.
How can the inorganic phosphate be put to use ?
Added to another compound known as phosphorylation - reactive
How is ATP resynthesised ?
In a condensation reaction between ADP and Pi
This happens during both respiration and photosynthesis
Catalysed by atp synthase
So what does ATP hydrolysis , inorganic phosphate and ATP do after being used?
ATP hydrolysis coupled with other energy requiring reactions.
Inorganic phosphate added to compound - phosphorylation
ATP resynthesised In condensation reaction between ADP+Pi by atp synthase
How many phosphate does adenosine diphosphate have?
2
In a cell there’s a constant cycle between ADP + Pi and ATP , wby?
Allows energy to be released and stored
So what is ATP?
A store of energy.
Energy makes ATP
It’s released when ATP is hydrolysed to ADP and Pi
