12.2 link reaction and Krebs cycle

Question 1

step 1 link reaction

Answer 1

pyruvate from glycolysis is actively transported into the matrix of the mitochondria

Question 2

step 2 link reaction

Answer 2

pyruvate undergoes a series of reactions

Question 3

step 3 link reaction

Answer 3

pyruvate is oxidized by removing hydrogen to form NADH,co2 and an acetyl group

Question 4

step 4 link reaction

Answer 4

acetyl group reacts with CoA enzyme

Question 5

step 5 link reaction

Answer 5

the forms acetyl CoA

Question 6

step 1 Krebs cycle

Answer 6

series of oxidation and reduction reactions

Question 7

step 2 Krebs cycle

Answer 7

Acetyl CoA reacts with a 4c molecule to create a 6c molecule

Question 8

step 3 Krebs

Answer 8

the 6c molecule loses co2 and hydrogen to produce one ATP molecule as a result of substrate level phosphorylation

Question 9

significance of Krebs cycle

Answer 9

-produces hydrogen atoms used in electron transfer chain for oxidative phosphorylation
-regenerates 4c molecule to prevent accumulation of acetyl CoA