18 Respiration Flashcards
what are the 4 stages of respiration?
glycolysis
link reaction
krebs cycle
oxidative phosphorylation
where does glycolysis occur?
in the cytoplasm
where does link occur?
in the matrix
where does krebs occur?
in the matrix
where does oxidative phosphorylation occur?
in the inner mitochondrial membrane
is glycolysis anaerobic or aerobic?
anaerobic
it does not require oxygen
what is glucose turned into in glycolysis?
1 x hexose bisphosphate
what is needed for glucose to turn into hexose bisphosphate?
2 x ATP
what does hexose bisphosphate split into?
2 x triose phosphate
what is triose phosphate turned into?
pyruvate
what is needed to convert each TP to pyruvate?
NAD
what does NAD do to TP?
it takes a hydrogen to form reduced NAD
what is produced from converting both TP to pyruvate?
2 x pyruvate
4 x ATP
2 x reduced NAD
what is the net ATP production in glycolysis?
2 ATP
what are the products of glycolysis for one molecule of glucose?
2 x pyruvate
2 x reduced NAD
2 x ATP
why does glycolysis have substrate level phosphorylation?
ATP is produced when ADP is phosphorylated by the phosphates in TP
where does the reduced NAD from glycolysis go?
to the ETC for oxidative phosphorylation
where does the ATP from glycolysis go?
used for energy
where does the pyruvate from glycolysis go?
to the link reaction
how does the pyruvate get into the mitochondria matrix?
by active transport through carrier proteins
what happens to pyruvate in the link reaction?
converted to an acetyl group
how many carbons in pyruvate?
3
how many carbons in acetyl?
2
what are the byproducts of the conversion of each pyruvate to acetyl?
CO2
reduced NAD