Mod7,8, Medical Biochemistry Unit 1 Exam, Week 2 Evaluation, Pre-Evaluation Question Bank 1with Verified Answers| 100% Correct| 100% Score

Succinate is a substrate for which complex in the ETC? - Complex II In the case of an exothermic reaction: - deltaG0 (spontaneous reaction) would be negative Last cytochrome in ETC, cytochrome oxidase, passes electrons to O2. Cytochrome oxidase is able to do this because it has: - lower Km for oxygen then hemoglobin The lower Km for oxygen allows cytochrome oxidase to 'pull' oxygen from myoglobin and hemoglobin, additionally it is bound to copper ions that allows for the collection of 4 electrons required for the reduction of oxygen The addition of dinitrophenol to the ETC will lead to an increase in O2 consumption. This is an example of: - uncoupler DNP is an uncoupler of the ETC dissipating the proton gradient across the inner mitochondrial membrane The oxidation of double bonds is coupled to: - the reduction of FAD Which of the following components of ETC is not bound to the mitochondrial membrane? - CoQ-- mobile component, able to accept both electrons and protons Which is an example of mechanical work? - the energy required to change the conformation of hemoglobin ATP is a high energy molecule that is often hydrolyzed during reactions. The energy within ATP is stored primarily in which of the following components of the molecule? - high energy phosphate bonds