Uci Bio 93 Midterm 2 Complete Set Exam Questions With Answers | Verified

UCI Bio 93 Midterm 2 COMPLETE SET EXAM QUESTIONS WITH ANSWERS | VERIFIED What is a metabolic pathway? - ANSWER A pathway that a molecule goes through, resulting in a specific product. What is metabolism? - ANSWER The totality of an organisms chemical reactions Gibbs free energy - ANSWER Portion of a system that can perform work when temp and pressure are uniform throughout the system. What is a way to show change in free energy? - ANSWER What does a negative Delta G mean? - ANSWER A process that is spontaneous What does spontaneous mean? - ANSWER Means that a process will occur. What happens to the energy in a exergonic reaction? - ANSWER It is released What happens to the energy in an endergonic reaction? - ANSWER It is consumed in the reaction. True or False A cell must have endergonic and exergonic reactions - ANSWER True Is ATP Hydrolysis an exergonic or endergonic reaction? - ANSWER Exergonic Mechanical and Transport work are what kind of reactions? - ANSWER Endergonic Why does ATP hydrolysis release so much energy? - ANSWER All 3 phosphate groups ate neg. charged, so there is mutual repulsion within all of them What do enzymes do? - ANSWER Lower energy barriers to drive chemical reactions What does the suffix -ase usually mean? - ANSWER An enzyme How does an exergonic energy profile look like? - ANSWER Enzymes are biological ___________ - ANSWER Catalysts What is the site of cellular respiration in all eukaryotic cells? - ANSWER Mitochondria In Biology, what is another word for the addition of electrons to a substance? - ANSWER Reduction In Biology, what is another word for the loss of electrons to a substance? - ANSWER Oxidation What is cellular respiration? - ANSWER Catabolic reactions used to generate ATP Where does glycolysis happen? - ANSWER In the cytosol What is glycolysis? - ANSWER The breaking down of glucose into 2 molecules of a compound of pyruvate. What happens in the citric acid cycle? - ANSWER The breakdown of glucose to carbon dioxide is completed. What is stage 1 of cellular respiration? - ANSWER Glycolysis What is stage 2 of cellular respiration? - ANSWER Pyruvate oxidation and citric acid cycle What is stage 3 of cellular respiration? - ANSWER Oxidative Phosphorylation What is the purpose of NADH? - ANSWER Transfers electrons from food to electron transport chain. Pyruvate is converted to what compound? - ANSWER Acetyl CoA Where does the citric acid cycle occur? - ANSWER In the mitochondrial matrix What happens in substrate-level phosphorylation? - ANSWER A substrate gives a phosphate to ADP, making a product and ATP