Approximately how many kcal per day does an average 6 year old need to obtain?
a. 400
b. 800
c. 1600
d. 2400
e. 3200
ANS: C
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Which of the following is a correct statement about the energy systems and fuels used by the body?
a. After 20 minutes of sustained activity, fuel for the muscles primarily comes from glucose that is broken down by glycolysis. b. About 90% of the fuel is derived from fat at rest. c. All energy systems are used at all times, but one system which dominates depending on intensity and conditioning of athlete. d. An anaerobic energy system is the most efficient way to fuel the body for prolonged activity. e. The lactic acid system is the predominant source of energy after 3 minutes of activity and until activity has reached 20 minutes in length.
?What accounts for the higher energy density of a fatty acid compared with the other energy-yielding nutrients?
a. Fatty acids have a lower percentage of hydrogen-oxygen bonds.
b. Fatty acids have a greater percentage of hydrogen-carbon bonds.
c. Other energy-yielding nutrients have a lower percentage of oxygen-carbon bonds.
d. Other energy-yielding nutrients undergo fewer metabolic reactions, thereby lowering the energy yield.
e. Other energy-yielding nutrients have a lower percentage of oxygen-hydrogen bonds.
Glycolysis is the conversion of ____.?
A) ?glycogen to fat B) ?glycogen to protein C) ?glucose to pyruvate D) ?glucose to glycogen
Death rates from high blood pressure are higher for whites than for blacks
a. True b. False Indicate whether the statement is true or false