MSCI 530 Quiz 2 Bioenergetics

MSCI 530 Quiz 2: Bioenergetics

1. Which of these is capable of scavenging and removing hydrogen peroxide in the cells?
2. The molecular basis for non-shivering thermogenesis in brown fat is the presence of this protein;
3. If you suspect that a patient has myocardial infarction, which of these enzymes could indicate myocardial injury;
4. These are all inhibitors of respiratory complex IV of the electron transport chain except;
5. NADPH produced in the pentose phosphate pathway is used in the following metabolic processes except;
6. Red blood cells are particularly susceptible to oxidative damage in patients with G6PD deficiency due to the absence of this NADPH- producing enzyme;
7. In the pentose phosphate pathway, the step that is catalyzed by this enzyme results in ATP production;
8. Thiamine pyrophosphate is a significant co-factor for the this enzyme of the pentose phosphate pathway;
9. The intracellular location of the key enzymes of the hexose monophosphate shunt pathway is the;
10. Which of these scenarios do you suspect will have the greatest ux of substrates into the hexose monophosphate shunt pathway?
11. In a patient with acute lobar pneumonia caused by Streptococcus pneumonia, examination of his neutrophils will reveal an increased activity of this enzyme;
12. Which of these factors is least likely to inhibit the activity of PDH?
13. The irreversibility of the PDH reaction explains why the liver cannot use acetyl-CoA as a gluconeogenic substrate.
14. Which of these serves as a co-factor for the E1 subunit of the PDH enzyme complex?
15. Which of these substrates is not a source of succinyly-CoA for TCA cycle anaplerosis?
16. Which of these biochemical features is not consistent with a case of fumarase deciency?
17. Which macromolecular complex of the electron transport chain is embedded in but does not span the inner mitochondrial membrane?
18. The electron transport chain is tightly coupled to oxidative phosphorylation in these tissues except;
19. This is an example of a small mobile electron carrier that transfers electrons between complexes in the electron transport chain?
20. The electrons of FADH2 are directly transfered to this component of the electron transport chain;