More Krebs Cycle Help Flashcards
In which steps are NADH produced
3 steps produce NADH.
Isocitrate –> Alpha ketoglutarate
catalyzed by: isocitrate dehydrogenase
Alpha ketoglutarate –> Succinyl CoA
catalyzed by: alpha ketoglutarate dehydrogenase
Malate–>oxaloacetate
catalyzed by: Malate Dehydrogenase
Which steps in the Krebs Cycle produce CO2?
2 steps:
Isocitrate –> Alpha ketoglutarate
catalyzed by: isocitrate dehydrogenase
Alpha ketoglutarate –> Succinyl CoA
catalyzed by: alpha ketoglutarate dehydrogenase
Which intermediate in the Krebs cycle is used for substrate level phosphorylation?
the high energy molecule Succinyl CoA
What REACTION in the krebs cycle produces GTP?
Succinyl CoA—-> Succinate
catalyzed by: Succinyl-CoA synthetase
Which reaction in the Krebs cycle produces QH2 (or FADH2)
Succinate —> Fumurate
catalyzed by: Succinate dehydrogenase
Each QH2 molecule can produce _____ ATP
2
Each NADH molecule can produce ______ ATP
3
Each GTP molecule can produce ______ ATP
1
How many NADH, QH2, AND GTP are produced in the Krebs cycle?
3 NADH
1 QH2
1 GTP
For every molecule of acetyl-coA invested in the Krebs Cycle, how many CO2 are released?
2
The Krebs cycle operates in the ____ of the mitochondria, while the ETC operates in the ____ of the mitochondria
Krebs cycle operates in the MATRIX of the mitochondria while the ETC operates in the MEMBRANE of the mitochondria
Name the 4 dehydrogenase enzymes
-isocitrate dehydrogenase
-alpha ketoglutarate dehydrogenase
-succinate dehydrogenase
-Malate dehydrogenase
Name the enzymes in order, starting with the enzyme that catalyzes the formation of citrate from oxaloacetate and acetyl-CoA
- citrate synthase
- aconitase
- isocitrate dehydr.
- a ketoglutarate dehydr.
- Succinyl-CoA Synthetase
- Succinate dehydr.
- Fumarase
- Malate dehydr.
Name the intermediates in order starting with citrate
- Citrate
- Isocitrate
- a ketoglutarate
- succinyl-CoA
- Succinate
- Fumarate
- Malate
- Oxaloacetate
