1. in photosynthesis, electron transport comes at the beginning of the process. where does electron transport occur during cellular respiration? 2. what is the role of the electron transport chain in cellular respiration? 3. why is the role of oxygen in cellular respiration? 4. describe atp synthase and its role.5. summarize how up to 38 molecules of atp are produced for each glucose molecule.

Electron transport occurs in the inner membrane of the mitochondria. The electrons are produced from the splitting of protons ferried  into the matrix  by the Co Enzymes  FAD+  and NAD+ . It simply refers to chain of electrons gradient  formed by four protein complexes.

Cellular respiration is the production of ATPs in form of heat from combustions of oxygen with glucose in the mitochondria of cells. Photosynthesis is the production of glucose,(main product) water molecule(by products) and heat  in green plants when C02 combine with water in presence of sunlight (trapped by chlorophyll of leaves)  and enzymes.  

The role is to generate Electrical Potential Energy from the transfer of electrons from one protein complex to another. The energy is stored as gradients of hydrogen ions which diffuses inwards into the matrix for ATPs synthesis.

Oxygen is the final electron Acceptor. So that there will be continuous availability of electrons to produce Electrical Potential Energy  for ATPs production.

It is an enzyme( a protein) with three binding sites. These sites rotates to create a structural  changes that exposes the binding sites for Binding of ADP with Pi, formation of ATP and the release of ATP. It roles is to catalyze the formation of ATPs

Summary;

    This is 38ATPs.

Note further breakdown of this to show how ATPs in obtained from each level is beyond the scope of the middle school.

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1. It's at the end of the assembly line, and it takes place in the inner membrane.

2. It's job is to build up a surplus of hydrogen ions in the inter membrane, so that there will be a lot of gradient.

3. Cells in our body combine glucose and oxygen to make ATP and carbon dioxide.

4. ATP synthase is an enzyme that generates ATP during the cellular respiration.

5. 2 molecules from the Glycolysis, 2 molecules from the Krebs Cycle and 34 molecules from electron transport system.

Hope this helps :)    

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