what are phosphagens give example and state their role?
Answers
Answer:
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Explanation:
The cell then turns ATP into ADP, and then the phosphagen turns the ADP back into ATP. ... The ATP levels and creatine phosphate levels working together are called the phosphagen system. This phosphagen system supplies the energy needs of working muscle, but only for 8 to 10 seconds.
Answer:
Phosphagens, also known as macroergic compounds, are high energy storage compounds, also known as high-energy phosphate compounds, chiefly found in muscular tissue in animals. They allow a high-energy phosphate pool to be maintained in a concentration range, which, if it all were adenosine triphosphate (ATP), would create problems due to the ATP-consuming reactions in these tissues. As muscle tissues can have sudden demands for much energy, these compounds can maintain a reserve of high-energy phosphates that can be used as needed, to provide the energy that could not be immediately supplied by glycolysis or oxidative phosphorylation. Phosphagens supply immediate but limited energy.
The actual biomolecule used as a phosphagen is dependent on the organism. The majority of animals use arginine as phosphagen; however, the phylum Chordata (i.e., animals with spinal cords) use creatine. Creatine phosphate, or phosphocreatine, is made from ATP by the enzyme creatine kinase in a reversible reaction:
Creatine + ATP ⇌ creatine phosphate + ADP (this reaction is Mg++-dependent)
However, annelids (segmented worms) use a set of unique phosphagens; for example, earthworms use the compound lombricine.
Phosphagens were discovered by Philip Eggleton and his wife Grace Eggleton.
Explanation:
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