Biology 1201A Lecture Notes - Lecture 6: Exergonic Reaction, Activation Energy, Exergonic Process
25 Nov 2016
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Document Summary
Subunits of life: all life is made up of monomers and polymers. Nucleic acids, proteins, carbs, etc: numerous biochemical pathways are invited in synthesizing polymer from monomers, synthesis and breakdown reactions occur within the aqueous intracellular cytoplasm. Dehydration and hydrolysis: many biochemical reactions involve water. -h and -oh groups added or removed during the reaction. Endergonic reactions: key to anabolic pathways (synthesis) Require an input of energy: almost all of the energy in the cell is supplied in form of adenosine triphosphate (atp) Used by almost all forms of life: how does atp supply its energy? energy is located in the phosphate groups. Increase in entropy: although hydrolysis of atp is spontaneous, it is not especially reactive. Rate of reaction is slow: work via energy coupling. Atp and energy coupling: energy of atp is harnessed by coupling the conversion to adp + p to drive an endergonic reaction, energy coupling requires enzyme based catalysis of atp.
