Lecture 4 Flashcards
what are chemical reactions
the breaking/forming of bonds
What is energetic coupling
when a spontaneous reaction drives a non-spontaneous reaction
What are enzymes
catalysts that increase the rate of a reaction
What are allosteric enzymes
enzymes that are activated/inhibited as when binding to another molecule changes its shape
What is free radical (reactive oxygen species)
it describes atoms/molecules that contain unpaired electrons that become unstable
What happens to bonds during reactions
bonds change how they are linked to each other
What is gibs free energy
delta G - the amount of energy in a system to do work
What happens if products have more energy than reactants
delta G is (+), its endergonic, and non-spontaneous
What happens when reactants have more energy than products
delta G is (-), its exergonic, and spontaneous
What is enthalpy and the formula for it
energy available for work + energy lost
delta G= delta H - T delta S
In a catabolic reaction what is the enthalpy formula
(-) delta G= small delta H - big T delta S
In a anabolic reaction what is the enthalpy formula
(+) delta G= big delta H - small T delta S
in energy coupling, if reaction 1 is delta G = -7.3
spontaneous cause (-)
in energy coupling, if reaction 2 is delta G = 3.3
non-spontaneous cause (+)
in energy coupling, if result is delta G = -4.0
couples reaction due to (-)
