Exam 5

glycolysis
Which one of the following is not part of the common catabolic pathway?
3 NADH, 1 FADH2, and 1 GTP
Which one of the following indicates the correct production of high energy producing compounds for one turn of acetyl CoA through the citric acid cycle?
The transport of H+ ions from the intermembrane space into the matrix of the mitochondria
The energy captured by ATP synthetase to form ATP comes from which one of the following?
formation of H2O from e-, H+ and oxygen
Which one of the following is a major factor in maintaining the proton gradient?
reacts with the electrons transmitted down the electron transport chain during H2O production, reacts with protons in the matrix of the mitochondria during H2O production (both a and c)
Which of the following is (are) a role of O2 in the common catabolic pathway?
isocitrate dehydrogenase
Which one of the following enzymes in the citric acid cycle undergoes both positive and negative regulation and is therefore the key regulatory enzyme in the citric acid cycle?
inner mitochondrial membrane
Where are the proteins involved in the electron transport chain located?
inner mitochondrial membrane
Where is the ATP synthase enzyme located?
4 ATP and 2 NADH
Which one of the following represents the correct production of ATP and NADH in stage 2 of glycolysis?
pyruvate
What is the end product of glycolysis in the cytoplasm?
lactate
What is the end product of glycolysis in the cytoplasm in a strenuously exercising muscle that is operating in anaerobic conditions?
gluconeogenesis
Synthesis of glucose from non-carbohydrate sources is termed:
fructose-6-phosphate -> fructose-1,6-bisphosphate
The key regulatory step in glycolysis is which one of the following?
phosphofructokinase
The enzyme that catalyzes the reaction that is the correct response to question 30 is? (fructose-6-phosphate -> fructose-1,6-bisphosphate)
ATP
The enzyme which is the correct response in question 31 is inhibited by high concentrations of which one of the following? (phosphofructokinase)
ADP
The enzyme which is the correct response in question 31 is activated by high concentrations of which one of the following? (phosphofructokinase)
inhibits the enzyme
High concentrations of citrate have which of the following effects on the enzyme which is the correct response in question 31? (phosphofructokinase)
glycogen
Glucose production from which one of the following would not be considered gluconeogenesis?
acetyl CoA
What is the end product of fatty acid oxidation by the beta oxidation pathway?
beta oxidation
Which of the following processes do not take place in the cytoplasm?
acetyl CoA carboxylase
The key regulatory step in fatty acid synthesis is catalyzed by the enzyme:
malonyl CoA
What is the primary product of the action of the enzyme which is the correct response for question 51? (acetyl CoA carboxylase)
movement of H+ across the inner mitochondrial membrane
Which one of the following processes is facilitated by the movement of electrons down the electron transport chain?
citrate
Which one of the following compounds is the major source of moving acetyl CoA molecules from the mitochondria to the cytoplasm?
citrate cleaving enzyme
Acetyl CoA molecules are generated in the cytoplasm from the compound which is the correct answer for question 55 through the action of which enzyme?