ATP
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1
What is ATP?
ATP is the immediate source of energy in a cell
2
What is the process of releasing energy from glucose called?
Respiration
3
Why can’t a cell use glucose directly for energy?
A cell cannot use glucose directly for energy
4
What is made from the energy released from glucose in respiration?
ATP
5
What components make up ATP?
Adenine, ribose sugar, three phosphate groups
6
What is ATP classified as because it’s a modified nucleotide?
A nucleotide derivative
7
What happens to ATP once it’s made?
ATP diffuses to the part of the cell that needs energy
8
Where is the energy in ATP stored?
High-energy bonds between phosphate groups
9
How is energy in ATP released?
Via hydrolysis reactions
10
What does ATP break down into when energy is needed?
ADP and Pi (Adenosine diphosphate and Inorganic phosphate)
11
What type of reaction breaks down ATP, and what enzyme catalyzes it?
A hydrolysis reaction catalyzed by ATP hydrolase
12
What are reactions called when ATP hydrolysis directly powers them?
Coupled reactions
13
What is the process of adding an inorganic phosphate to another compound called?
Phosphorylation
14
What is the effect of phosphorylation on a compound?
It makes the compound more reactive
15
What enzyme catalyzes the re-synthesis of ATP from ADP and Pi?
ATP synthase
16
During which processes is ATP re-synthesized?
Respiration and photosynthesis
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