Topic 4 Flashcards
The ability to do work
Energy
Energy of motion
Kinetic Energy
Stored energy
Potential Energy
Study of energy and its transformations
Thermodynamics
Cells are what kind of system?
Open system
System where nothing is exchanged with its environment
Isolated System
System where energy is exchanged with its environment
Closed System
System where energy and matter are both exchanged with its environment
Open System
Energy can be transferred and transformed, it can not be created of destroyed
1st Law of Thermodynamics
Entropy of the universe increases during spontaneous processes
2nd Law of Thermodynamics
The tendency of energy to become dispersed / spread / disordered.
Entropy
A process that can occur without an input of energy
Spontaneous Reations
Total potential energy in a system
Enthalpy
Transformation the absorbs energy
Endothermic
Transformation that releases energy
Exothermic
Energy in a system that is available to do work
Free Energy (G)
G reactants > G products
Exergonic Process
G reactants < G products
Endergonic Process
Change in G is + or - in a exergonic process?
Negative
Change in G is + or - in a endergonic process?
Positive
Maxumium stability
Equilibrium
When is equilibrium reached?
When reactants are converted to products and products are converted back to react and at equal rates
If a cell is at equilibrium it is…
Dead
Chemical agent that speeds up the rate of reaction without itself taking part in the reaction
Biological Catalysts
