krebs cycle

Question 1

where krebs occurs

Answer 1

mitochondrial matrix

Question 2

krebs: aerobic/anaerobic

Answer 2

aerobic

Question 3

how many times does krebs happen

Answer 3

twice

Question 4

krebs net products

Answer 4

2 ATP, 6 NADH, 2 FADH

Question 5

carbons start and end in Krebs

Answer 5

2x acetyl-CoA, ends w 3 1C CO2s for EACH 3C PYRUVATE

Question 6

electron carriers in krebs cycle

Answer 6

2x [ 3NAD + 1FAD => 3NADH + 1FADH]

Question 7

Krebs: step 1

Answer 7

acetyl + oxaloacetate = citrate (CONDENSATION)

Question 8

Krebs: step 2

Answer 8

citrate => isocitrate (ISOMERIZATION)

Question 9

Krebs: step 3

Answer 9

isocitrate => a-ketoglutarate (NADH, CO2) (1ST OXIDATION + DECARBOXYLATION)

Question 10

Krebs: step 4

Answer 10

a-keto => succinyl-CoA (NADH, CO2) (2ND OXIDATION + DECARBOXYLATION)

Question 11

Krebs: step 5

Answer 11

succinyl CoA => succinate (ATP by sub.phosph.) (SUB LEVEL PHOSPH)

Question 12

Krebs: step 6

Answer 12

succinate => fumarate (FADH2) (3RD OXIDATION)

Question 13

Krebs: step 7

Answer 13

fumarate => malate (CONVERSION + H2O)

Question 14

Krebs: water

Answer 14

released in step 7

Question 15

Krebs: step 8

Answer 15

malate => oxaloacetate (NADH) (4TH OXIDATION + REGENERATION OF OXA.)