metabolism Flashcards
what is energy
the ability to cause change
what is energy used for
to do work…but not all energy can do work
what is free energy
energy that can do work
Delta(G)= Delta(H)-TxDelta(S)
what is Entropy
disorder
H=G=TS (what is H)
total energy
H=G=TS(what is G)
energy that can do work
H=G=TS (what is T and S)
energy that can’t do work
How to determine spontaneity
If delta G is negative, which means entropy is positive
is delta G is positive, it will never occur unless energy is added
why does spontaneity matter?
determines whether we need to produce energy or get it from another source
energy released represents what kind of reaction
exergonic
loss of energy is what
more stability (closer to equilibrium)
How do you go from death to life?
active transport through a semipermeable membrane in combination with ATP
how does energy change after each step in a metabolic pathway
either consumed or produced aided by a catalytic enzyme
what does a catalyst enzyme do
speeds up a reaction (enzyme is left over)
what is RNA used as
a catalyst due to the prescense of oxygen
