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Q: Blood Lactate Levels during Vigorous Exercise. The concentrations of lactate in blood plasma before, during,...

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Chemistry

Q: Blood Lactate Levels during Vigorous Exercise. Theconcentrations of lactate in blood plasma before, during, and aftera 400 m sprint are shown in the flowing graph.

a. What causes the rapid rise in lactate concentration?

b. What causes the decline in lactate concentration aftercompletion of the sprint? Why does the decline occur more slowlythan the increase?

c. Why is the concentration of lactate not zero during theresting state?

Answer & Explanation Solved by verified expert
4.1 Ratings (588 Votes)
Ans 1 During vigorous exercise ATP is hydrolyzed at greater speed to compensate the demand of energy for muscle activity Simultaneously the muscles also face hypoxic condition because I the rate of oxygen supply to skeletal muscles does not increase significantly during strenuous exercise and II Myoglobin in not very much efficient O2 transporter like hemoglobin in RBCs So under low pO2 limited O2 availability in muscles myocytes cant carry out citric acid cycle and electron transport chain in mitochondria because    See Answer
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