2.2 - Cellular Respiration Flashcards
What is Glycolysis?
Glycolysis is the breakdown of glucose to pyruvate
Where in a cell does Glycolysis take place?
Cytoplasm
What happens in the first stage of Glycolysis?
2 ATP is used to phosphorylate glucose and intermediates
What happens in the second stage of Glycolysis?
The generation of more ATP, resulting in a net gain of 2 ATP
What needs to be present for the Krebs cycle to occur?
Oxygen
What does the phosphorylation of glucose and intermediates during the energy investment stage lead to?
It leads to the generation of more ATP during the energy pay-off stage, resulting in a net gain of ATP
What does Acetyl combine with during the start of the kerb cycle?
Coenzyme A
What does Acetyl coenzyme A combine with to make a citrate?
Oxaloacetate
Where does the Kreb cycle take place?
The matrix of the mitochondria
What enzyme removes hydrogen ions and electrons?
Dehydrogenase
What Coenzyme does dehydrogenase pass hydrogen ion and electrons on to?
Coenzyme NAD, forming NADH
What happens to pyruvate during glycolysis?
Pyruvate is broken down to an acetyl group that combines with coenzyme A, forming Acetyl coenzyme A
What happens to citrate during a series pf enzyme controlled reaction?
Citrate is gradually converted back into oxaloacetate, resulting in the generation of ATP and release of CO2
In what stages is the dehydrogenase enzyme being used?
Both, Glycolysis and Citric acid cycle
What happens to the hydrogen ions and electrons from NADH?
They are passed to the ETC on the inner mitochondrial membrane