10 Questions
Gibbs free energy is more likely negative when_________.
entropy increases and enthalpy is low
The 2nd law of thermodynamics stipulates that_______.
entropy increases
An enzymatic reaction will most likely proceed if_________.
the activation energy is lower than the energy expended to promote a reaction.
Energy carriers are activated________.
during the breakdown of molecules
Gibbs free energy is negative when_______.
bonds are broken
•𝚫G indicates_______.
the change in a reaction from substrate to product
In Catabolism, molecules are____whereas in Anabolism molecules are_______.
broken down; synthesized
Which of the molecules below are activated carriers?
All of the above.
Equilibrium refers to a state where_______.
reactants and products do no longer change
Enzymes________.
lower the activation energy without participating in the reaction between two reactants leading to a product.
Study Notes
Thermodynamics and Reactions
- Gibbs free energy is more likely negative when the reaction is spontaneous.
- The 2nd law of thermodynamics stipulates that the total entropy of a closed system always increases over time.
Enzymatic Reactions
- An enzymatic reaction will most likely proceed if the substrate binds to the active site of the enzyme.
- Energy carriers are activated when they carry energy from one reaction to another.
Gibbs Free Energy
- Gibbs free energy is negative when the reaction is spontaneous and favorable.
- ΔG indicates the change in Gibbs free energy.
Metabolism
- In Catabolism, molecules are broken down to release energy, whereas in Anabolism molecules are built up to store energy.
Activated Carriers
- ATP, NADH, and FADH2 are activated carriers.
Equilibrium
- Equilibrium refers to a state where the rates of forward and reverse reactions are equal.
Enzymes
- Enzymes act as biological catalysts to speed up chemical reactions in living organisms.
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