Skeletal muscles can use both aerobic and anaerobic respiration to produce the ATP needed for muscle contractions. Skeletal muscles can also stockpile a small amount of ATP and another molecule, phosphocreatine (PCr), that can be used to convert ADP into ATP quickly without having to use either forms of respiration. In prolonged exercise, such as swimming, all three of these processes are utilized to supply ATP for muscle contraction. Which of the following represents the correct order in which these processes are used in the muscle cells during a prolonged swim?

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    ATP/PCr -----> aerobic respiration -----> anaerobic respiration
    aerobic respiration -----> anaerobic respiration -----> ATP/PCr
    ATP/PCr -----> anaerobic respiration -----> aerobic respiration
    anaerobic respiration -----> aerobic respiration -----> ATP/PCr
asked May 30, 2013 in Biology by anonymous
    

1 Answer

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ATP/PCr -----> anaerobic respiration -----> aerobic respiration
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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