One MET is equal to ____.
A) the energy expenditure of an average resting metabolic rate
B) energy expenditure during the first 10 minutes of exercise
C) energy expenditure just prior to the point of fatigue
D) 55 kcal/hour
Q. 2The primary function of the Krebs cycle is to:
a. degrade glucose or glycogen to lactate and produce ATP.
b. oxidize carbohydrates, fats, and proteins and ready them for ATP production.
c. generate large amounts of ATP and related compounds.
d. produce carbon dioxide and water for use in other energy-yielding systems.
Q. 3Which statement is true when people are asked to keep a food diary?
A) A major source of error is overestimating portion size.
B) Athletes may consciously or unconsciously undereat.
C) Many people record snacks in their food diaries.
D) Food intake is underreported by females but not males.
Q. 4The term aerobic energy system refers to:
a. the creatine phosphate energy system.
b. anaerobic glycolysis.
c. oxidative phosphorylation.
d. all of the above
Q. 5Of the three constituents of total energy expenditure the one that can be influenced most readily and to the largest extent by the individual is ____.
A) resting metabolism rate
B) thermic effect of food
C) physical activity
D) food
Q. 6Why is pyruvate considered a key glycolytic compound?
a. It can be metabolized either anaerobically or aerobically.
b. It has the simplest chemical structure of all the substrates used for energy.
c. It is the entry point for aerobic metabolism of all carbohydrates, proteins, and fats.
d. It is more stable than acetyl CoA.
Q. 7Which macronutrient has the greatest effect on the thermic effect of food?
A) carbohydrates
B) proteins
C) fats
D) alcohol
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