Review Flash Cards - Energy & Metabolism
1
Q
What does a Positive G imply?
A
- Products have more free energy than reactants
- H is lower or S is lower
- Not spontaneous, need energy
- Endergornic
2
Q
How can the rate of reaction be increased?
A
1) Increasing energy of reacting molecules (heating)
2) Lowering activation energy (catalyst: enzyme)
3
Q
What is the composition of ATP
A
- Ribose
- Adenine
- Chain of 3 phosphates
4
Q
What is the function of the 3 phosphates in ATP?
A
- key to energy storage
- strongly repel each other so bonds unstable and release energy when broken
5
Q
Why does the 2nd law of thermodynamics explain the spontaneity of exergonic reactions?
A
Increase in disorder so forward reaction favored
