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Identify the stage of cellular respiration in which each of the following takes place.

1. Produces 32 ATP molecules
2. Creates four ATP molecules, but then gains overall only two
3. Gives off carbon dioxide
4. Gives off water
5. Produces two ATP molecules

Sagot :

GinnyAnswer
Sure, let's break down the stages of cellular respiration in which each of these processes occurs:

1. Produces 32 ATP molecules:
This occurs during the Electron Transport Chain. The Electron Transport Chain is the final stage of cellular respiration, and it is where the majority of ATP is produced. When electrons are transferred through a series of proteins embedded in the inner mitochondrial membrane, a large number of ATP molecules are generated through oxidative phosphorylation.

2. Creates four ATP molecules, but then gains overall only two:
This process occurs in Glycolysis. Glycolysis is the first stage of cellular respiration where one molecule of glucose is broken down into two molecules of pyruvate. Even though four ATP molecules are created during this stage, two ATP molecules are used in the process, resulting in a net gain of two ATP molecules.

3. Gives off carbon dioxide:
This happens during the Krebs Cycle (Citric Acid Cycle). The Krebs Cycle occurs in the mitochondrial matrix and is responsible for the oxidation of acetyl-CoA to carbon dioxide and water. During this cycle, carbon dioxide is released as a byproduct.

4. Gives off water:
Water is produced during the Electron Transport Chain. As electrons move through the chain and finally combine with molecular oxygen, water is formed as a byproduct of this process. Specifically, oxygen acts as the final electron acceptor and combines with electrons and protons to form water.

5. Produces two ATP molecules:
This process also takes place in the Krebs Cycle (Citric Acid Cycle). Besides giving off carbon dioxide, the Krebs Cycle also produces a small amount of ATP directly. For each turn of the cycle, one ATP (or GTP, which is converted to ATP) is generated, resulting in the production of two ATP molecules per glucose molecule (since one glucose molecule leads to two turns of the cycle).

To summarize, here are the stages for each process:

- Produces 32 ATP molecules: Electron Transport Chain
- Creates four ATP molecules, but then gains overall only two: Glycolysis
- Gives off carbon dioxide: Krebs Cycle (Citric Acid Cycle)
- Gives off water: Electron Transport Chain
- Produces two ATP molecules: Krebs Cycle (Citric Acid Cycle)
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