BIOL 1201 : Exam 3 Study Guide
Document Summary
Understand the difference between anabolic and catabolic pathways: anabolic: building molecules, catabolic: breaking down molecules. Understand the first 2 laws of thermodynamics and how they relate to energy exchange: 1st law: energy cannot be created or destroyed. It can only be transferred or transformed: 2nd law: every time there"s a transfer of energy, some of the energy escapes as heat. Understand how atp hydrolysis provides energy for endergonic reactions: atp + h2o --- adp +pinorganic, this reaction is extremely exergonic. It releases 7. 3 kcal/mol: this energy has to go somewhere, so it"s used to power reactions that require energy. Understand how enzymes catalyze chemical reactions: enzymes really only do one thing: lower activation energy, enzymes do not affect the free energy of the reactants or the products. Causes a change in the shape of the active site, preventing the substrate from binding.
