This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Enzymes Enzymes Energy Energy
• The capacity to do work • Can not be created or destroyed (1st Law of Thermodynamics) (1 • Can be converted to another form Types of Energy Types
Light Kinetic Potential Chemical Heat Energy Energy
• Every energy transfer increases the Every disorder of the universe disorder (2nd Law of Thermodynamics) • Entropy – a measure of disorder • Heat – most random (disordered) form of Heat energy energy Energy Energy
• Exergonic reaction “energy out” spontaneous – no energy input required breakdown reaction AB A+B E Energy Energy
• Endergonic reaction “energy in” non-spontaneous – energy input required synthesis reaction A+B AB E Energy Energy
Metabolism – the totality of an organism’s Metabolism chemical processes chemical Anabolic pathways Catabolic pathways Enzymes Enzymes
• Speed up chemical reactions without Speed being consumed in the process being • Lower activation energy Enzyme Enzyme Animation Enzyme Naming Enzyme
• Name of substrate • What enzyme does
– Transferase – Ligase – Hydrolase – Isomerase • Ends in “-ase” Glucose isomerase Glucose Cellulase
DNA ligase Enzymes Enzymes
Enzyme (E) + Substrate (S) E-S complex E + Product (P) Enzyme Activity Enzyme
• Temperature • pH • Ion concentration • Cofactors and coenzymes • Inhibitors ATP ATP ATP Cycle ATP ...
View Full Document
- Spring '05