Chapter 6 Metabolism Energy And Enzymes Flashcards
Define energy and describe the major forms it can take.
How are chemical bonds considered to be a form of energy
Explain how changes in entropy ΔS and potential energy determine whether or not a reaction is spontaneous.
How does the change in enthalpy ΔH determine whether a reaction is exothermic or endothermic (give an example)?
Under what conditions can a nonspontaneous reaction occur?
How does the Gibbs free energy value ΔG indicate whether a reaction is spontaneous or nonspontaneous?
What are exergonic and endergonic reactions, and how do cells use ATP to couple these reactions to do work in the cell?
What is an enzyme, and why do cells need enzymes to catalyze chemical reactions?
What are the active and allosteric sites of an enzyme, and what is meant by the term “induced fit”?
Describe two ways in which enzymes are regulated and explain how this regulation is important in metabolic pathways.
How do temperature and pH affect the speed of enzymatically catalyzed chemical reactions?
