When Oxygen Delivery Becomes Insufficient to Support a Runner's Aerobic

question 46

Multiple Choice

When oxygen delivery becomes insufficient to support a runner's aerobic metabolism,cells switch to an emergency mode in which ________.

• A)ATP is generated less efficiently by harvesting the heat energy in a cell
• B)ATP is inefficiently produced and lactic acid is generated as a by-product
• C)lactic acid is broken down to produce smaller amounts of ATP
• D)carbon dioxide is joined with water to generate much smaller amounts of ATP

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