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Q: What is the energy source of the phosphorylation?
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Compare and contrast photophosphorylation and oxidative phosphorylation?

Oxidative phosphorylation is ATP synthesis driven by electron transfer to oxygen and photophosphorylation is ATP synthesis driven by light. Oxidative phosphorylation is the culmination of energy-yielding metabolism in aerobic organisms and photophosphorylation is the means by which photosynthetic organisms capture the energy of sunlight, the ultimate source of energy in the biosphere.


What is the pathway of energy transfer from the source in cellular respiration to its end product?

Electron transport chain and oxidative phosphorylation


Energy released by electrons is often used to phosphorylate?

Adenosine triphosphate, or ATP, is the most common source of energy in cells, and is created through phosphorylation. This can be photophosphorylation (as occurs in photosynthesis) or substrate level phosphorylation, or oxidative phosphorylation. ATP is created by adding a phosphate group to ADP (adenosine diphosphate), so the answer to your question would be that the energy is used to phosphorylate ADP, turning it into ATP.


What is the opposite of oxidative phosphorylation?

The opposite of phosphorylation is dephosphorylation. Source: http://en.wikipedia.org/wiki/Dephosphorylation


What advantages does oxidative phosphorylation have over anaerobic glycolysis?

Both processes are run inside the human body in order to produce energy. Oxidative phosphorylation produces much more energy at a less of an expense than anaerobic glycolysis. It also has energy coming from multiple sources unlike anaerobic glycolysis which only comes from one source.


What is the direct energy source that drives ATP synthesis during respiratory oxidative phosphorylation in eukaryotic cells?

the proton-motive force across the inner mitochondrial membrane.


What is the process of converting energycfrom a light -excited electron into pyrophosphate bond of an ADP molecule?

Most probably it is the substrate-level phosphorylation.


Is the energy produced from respiration coming from the Krebs cycle or electron transport?

Most of the energy comes from the electron transport chain by oxidative phosphorylation. However there is energy produced in the Krebs cycle and Glycolysis this is called substrate level phosphorylation.


What does the muscle fiber use energy for?

Sources of ATP include the phosphorylation of ADP by creatine phosphate, anaerobic glycolysis, and oxidative phosphorylation of ADP n the mitochondria.


What step in glycolysis consists of a phosphorylation reaction in which ATP is the phosphate source?

The first step


Where is most energy released during photosynthesis?

In chemiosmosis through oxydative phosphorylation.


What does ATP add to the Calvin - benson cycle?

ATP adds chemical energy to the Calvin-Benson cycle.