WHAT IS THE NET GAIN OF ATP IN CELLULAR RESPIRATION?

The net gain of ATP (Adenosine Triphosphate) in cellular respiration is approximately 30-32 molecules. Here's a step-by-step breakdown:

1. Glycolysis: This is the first step of cellular respiration, which occurs in the cytoplasm of the cell. One glucose molecule is broken down into two molecules of pyruvate, yielding a net gain of 2 ATP molecules.

2. Pyruvate Decarboxylation: Each pyruvate is converted into Acetyl CoA, which is then used in the Krebs cycle. This step does not produce any ATP.

3. Krebs Cycle (Citric Acid Cycle): This cycle occurs in the mitochondria. For each glucose molecule (which produced 2 Acetyl CoA), the Krebs cycle produces 2 ATP molecules.

4. Electron Transport Chain (ETC): This is the final step of cellular respiration, which occurs in the inner mitochondrial membrane. The ETC produces the most ATP, approximately 26-28 molecules per glucose.

So, adding up the ATP from each step, the total net gain from one glucose molecule is about 30-32 ATP. This can vary slightly depending on the efficiency of the ETC and the type of organism.

The net gain of ATP (Adenosine Triphosphate) in cellular respiration is approximately 30-32 molecules. Here's a step-by-step breakdown:

1. Glycolysis: This is the first step of cellular respiration, which occurs in the cytoplasm of the cell. One glucose molecule is broken down into two molecules of pyruvate, yielding a net gain of 2 ATP molecules.

2. Pyruvate Decarboxylation: Each pyruvate is converted into Acetyl CoA, which is then used in the Krebs cycle. This step does not produce any ATP.

3. Krebs Cycle (Citric Acid Cycle): This cycle occurs in the mitochondria. For each glucose molecule (which produced 2 Acetyl CoA), the Krebs cycle produces 2 ATP molecules.

4. Electron Transport Chain (ETC): This is the final step of cellular respiration, which occurs in the inner mitochondrial membrane. The ETC produces the most ATP, approximately 26-28 molecules per glucose.

So, adding up the ATP from each step, the total net gain from one glucose molecule is about 30-32 ATP. This can vary slightly depending on the efficiency of the ETC.