What is the total energy expenditure for someone consuming 3.0 L/min of oxygen at a RER of 0.8 for a duration 10 min.What is the mechanical efficiency of an individual doing 55 kcal with a total energy expenditure of 226 Kcal?

a) around 60% b)around 14.6% c)around 7.3% d) around 30%How is the type of epithelial tissue in the mucosa matched with the function of a particular part of the digestive tract?

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