Aerobic Respiration - Stage 2 Flashcards
What happens during stage two of aerobic respiration in the presence of oxygen?
Pyruvic acid enters a mitochondrion where it loses a carbon dioxide molecule to form a two carbon molecule called acetyl
What does acetyl (C2) combine with during stage 2 of aerobic respiration?
Coenzyme A
What is acetyl combined with coenzyme A known as?
Acetyl CoA
What does pyruvic acid loses during aerobic respiration?
Two high-energy electrons and a proton (H+)
What combines with NAD+ to form NADH during stage 2 of aerobic respiration?
Two high-energy electrons and a proton (H+)
What do two high-energy electrons and a proton (H+) combine with to form NADH?
NAD+
What is acetyl CoA broken into during stage 2 of aerobic respiration?
It is broken down to carbon dioxide and protons (H+)
In what form is the energy released by CoA during Krebs Cycle?
It is released in the form of high-energy electrons
What happens to the high energy electrons released by CoA in the Krebs Cycle?
They, along with protons (H+) are picked up by NAD+ to form NADH
What happens to the NADH molecule produced by Krebs Cycle?
It enters an electron transport system
During Krebs Cycle what is converted to ATP and water?
ADP +Pi
What happens to an ADP + Pi during Krebs Cycle?
It is converted into ATP and water
What converts NAD+ into NADH during Krebs Cycle?
2e- and H+
What converts 3NAD+ into 3NADH during Krebs Cycle?
3H+ (6e-)
How many carbons does Acetyl have?
2
