As exercise intensity increases, the percentage of energy from carbohydrate metabolism decreases.
Indicate whether the statement is true or false
Q. 2Why is there a difference between the amount of ATP produced by glucose and by glycogen?
A) The breakdown of glycogen requires many more steps thus more ATP is produced along the way.
B) The breakdown of glycogen requires less ATP in the energy investment phase.
C) Glucose and glycogen use very different metabolic pathways to yield pyruvate and that accounts for the difference in ATP production.
D) Less water is produced when glucose is the starting compound and that directly affects ATP production.
Q. 3As exercise intensity increases, the percentage of energy from fat metabolism decreases.
Indicate whether the statement is true or false
Q. 4Why does the amount of ATP produced in skeletal muscle differ from the amount produced in other tissues?
A) Skeletal muscle is more efficient than other tissues in the production of ATP.
B) Skeletal muscle transfers electrons via FAD while other tissues use NAD.
C) Skeletal muscle completely oxidizes carbohydrates while other tissues do not.
D) Skeletal muscle has fewer rate-limiting enzymes than do other tissues.
Q. 5At rest, the preferred fuel source is carbohydrate.
Indicate whether the statement is true or false
Q. 6The primary function of the electron transport chain is to ____.
A) initiate the glycolysis reaction and produce ATP
B) oxidize carbohydrates, fats, and proteins
C) produce ATP in the absence of oxygen
D) shuttle electrons from NADH and FADH to rephosphorylate ATP
Q. 7An exceptionally well-trained male endurance athlete will likely have a VO2 max greater than 100 ml/kg/min.
Indicate whether the statement is true or false
Q. 8The most important carriers for electrons in oxidation-reduction reactions are ____.
A) ADP and ATP
B) CrP and ATP
C) NAD and FAD
D) GDP and GTP
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