Select all of the following statements that are true concerning the citric acid cycle:
______________________
__ NAD+ an FAD become reduced.
__ High-energy carbon dioxide molecules will be generated by substrate-level phosphorylation.
__ ATP is synthesized by chemiosmosis.
__ The organic carbon (from acetyl CoA) that enters the cycle will be completely oxidized in the mitochondrial matrix.
__ Citrate must be continuously regenerated to prepare the cycle to process incoming acetyl CoA.
__ Upon entry into the citric acid cycle, acetyl CoA is combined with oxaloacetate.
__ Two ATP molecules will be consumed for each acetyl CoA that is processed by the cycle.
__ Organic molecules are oxidized in several different steps of the cycle.
Select all of the following statements that are true concerning the citric acid cycle:
______________________
| __ | NAD+ an FAD become reduced. |
| __ | High-energy carbon dioxide molecules will be generated by substrate-level phosphorylation. |
| __ | ATP is synthesized by chemiosmosis. |
| __ | The organic carbon (from acetyl CoA) that enters the cycle will be completely oxidized in the mitochondrial matrix. |
| __ | Citrate must be continuously regenerated to prepare the cycle to process incoming acetyl CoA. |
| __ | Upon entry into the citric acid cycle, acetyl CoA is combined with oxaloacetate. |
| __ | Two ATP molecules will be consumed for each acetyl CoA that is processed by the cycle. |
| __ | Organic molecules are oxidized in several different steps of the cycle. |
Related textbook solutions
Related questions
Question 18
The process that forms new glucose in the liver is called ...
| A. | glycogenolysis | |
| B. | Krebs cycle | |
| C. | lipolysis | |
| D. | gluconeogenisis | |
| E. | oxidative phosphorylation |
Question 57
A person exercises in their âfat burning zoneâ for 4 hours at 35% VO2peak. The O2 cost of exercise at that work rate is 0.5L/minute. Following exercise the subject rewards himself with an ice-cream sundae (700kcal). The following statement is true(assume 5kcal/lit of O2):
| A. | The subject is in neutral energy balance | |
| B. | The subject consumed fewer calories than they expended during exercise | |
| C. | The subject consumed more calories than they expended during exercise | |
| D. | Canât say |
Question 52
The primary purpose of the citric acid cycle is...
| aerobic glycolysis | ||
| gluconeogenesis using lactate | ||
| the decarboxylation of carbon compounds to produce NADH. | ||
| the shuttling of hydrogen ions through the inner mitochondrial membrane |
Question 51
In aerobic ATP production, the role of oxygen is to...
| to keep the electron transport chain operational | ||
| to accept electrons from the 3rd cytochrome and thereby oxidizing it so it can accept new electrons | ||
| act as a oxidizing agent by accepting electrons from the electron transport chain and combining with hydrogen ions (protons) | ||
| all of the above |
Question 50
Glucose is necessary for fatty acid oxidation because...
| its derivative, pyruvate, is condensated with carbonic acid to form oxaloacetate, which in turn is a necessary carbon compound in the citric acid cycle | ||
| it is needed to convert fatty acids to fatty acyl-CoA which in turn is oxidized to acetyl CoA | ||
| glucose is decarboxylated into cytochrome oxidase which is a necessary intermediate in the citric acid cycle | ||
| its derivative, acetyl CoA, is condensated with carbonic acid to form lactase, which in turn is a necessary carbon compound in the citric acid cycle |
