12.6 part 2

Question 1

Krebs cycle occurs in:

Answer 1

matrix of mitochondria

Question 2

Acetyl coenzyme A joins with a 4-carbon compound to make 6-carbon compound, this is broken down into a…

Answer 2

5 carbon compound, with the release of carbon dioxide

Question 3

The 5 carbon compound breaks down to reform the 4-carbon compound, releasing…

Answer 3

carbon dioxide

Question 4

Reduced coenzymes are also produced:

Answer 4

NADH - C6, C5, C4

FADH - C4

Question 5

As the reactions occur, enough energy is released to produce on ATP molecule for …

Answer 5

each acetyl coenzyme A that enters

Question 6

In krebs cycle, the remains of the glucose have been…

Answer 6

completely broken down

Question 7

when a carbon compound is oxidised, coenzymes are reduced:

Answer 7

NAD and FAD (hydrogen added to them)

Question 8

Decarboxylation is…

Answer 8

the removal of CO2

Question 9

stages of krebs cycle

Answer 9

DeNa DeNa A Fa…Na

Question 10

DeNa =

Answer 10

Decarboxylation and production of reduced NAD (occurs twice)

Question 11

A =

Answer 11

production of ATP

Question 12

Fa=

Answer 12

production of reduced FAD

Question 13

Na=

Answer 13

production of reduced NAD

Question 14

Each acetyl CoA entering the cycle results in:

Answer 14

2CO2 molecules
1 ATP molecule
4 pairs of H atoms [3 NAD, 1 FAD]

Question 15

Each reduced FAD =

2 from krebs =

Answer 15

1. 5

1. 5 x 2 = 3 ATP

Question 16

Each reduced NAD =

10 from glycolysis (2) link reaction (2) krebs (6)

Answer 16

2.5

25 ATP