Balance Sheet
Below is the different balance sheet of aerobic and anaerobic respiration.
Aerobic Respiration
Aerobic respiration is defined as a process of complete combustion of glucose. During the election transport system, oxidation of each NADH molecule produces three ATP whereas FADH2 molecule which produces two ATP molecules.
1 NADH → 3ATP
1 FADH2 → 2ATP
Reaction aerobic respiration is:
C6H12O6 + 6O2 → 6CO2 + 6H20 + 673Kcal
|
Phase |
Molecular change |
Cost per glucose molecules |
Gain per glucose molecule |
|---|---|---|---|
|
Glycolysis |
Conversion of glucose (6C) to 2 pyruvates (3C) |
2 ATP |
4 ATP 2 NADH |
|
oxidation of pyruvates |
Conversion of pyruvates (3C) to acetyl group (2C) |
Not produced |
2 NADH |
|
Krebs cycle |
Conversion of citric acid (6C) which is formed by the combination of an acetyl group and oxaloacetate to oxaloacetate (4C) |
Not produced |
2 ATP 6 NADH 2 FADH2 |
|
Electron transport |
oxidation of FAH2 and NADH to build water molecules and ATP. |
2 ATP |
34 ATP |
|
Pathway |
NADH (3 ATP) |
FADH2 (2 ATP) |
ATP |
Total |
|---|---|---|---|---|
|
EMP Pathway |
2✕3 = 6 |
– |
Produced -2 Used- 2 Total gain – 2 |
8 |
|
2(Pyruvate oxidation to acetyl CoA) |
2✕3 = 6 |
– |
– |
6 |
|
Krebs cycle |
6✕3 = 18 |
2✕2 = 4 |
2 |
24 |
|
Total |
10✕3 = 30 |
2✕2 = 4 |
4 |
38 |
This table shows how the number of ATP varies in prokaryotes and eukaryotes. The net gain of ATP is 36 in most eukaryotes, whereas it is 38 in prokaryotes.
Respiratory Balance Sheet – CBSE Class 11 Notes
Respiratory Balance Sheet: Balance sheet is used for representing the total gain of ATP for each molecule of glucose that is oxidized in the plants. Respiratory Balance Sheet can be drawn only theoretically and it is also assumed that the process of respiration is orderly and sequential. Therefore in other words a balance sheet can be formed for the gain and loss of energy using ATP in a cell.
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