Corrected True/False: Mark T for true F for false on Response Sheet AND if you a
ID: 3521888 • Letter: C
Question
Corrected True/False: Mark T for true F for false on Response Sheet AND if you answer false write in a word or phrase which corrects the statement to True. The word or phrase that makes the statement correct must substitute for the bolded/underlined section of the original statement
1. The complete oxidation of a molecule of glucose in skeletal muscle produces a net of 42 ATP
2. The maximum ability to utilize oxygen during exercise is called the OBLA.
3. The oxygen uptake in excess of the resting value during recovery from exercise is called oxygen deficit.
4. During steady-state sub-maximal exercise lactic acid production is generally balanced by its’ removal.
5. Slow twitch muscle fibers are best suited for anaerobic glycolysis
6. Carbohydrates are the only macronutrient to readily yield energy anaerobically.
7. The splitting of an ATP molecule (energy release: ATP - ADP + P + energy ) requires O2
8. An ergometer is a device that accurately measures caloric expenditure.
9. Anaerobic glycolysis takes place in the mitochondria of the cell
10. Lactate accumulates when conversion of NADH to ATP in the electron transport chain does not keep up with production of NADH in glycolysis and the Krebs cycle
Explanation / Answer
1. The statement is false.
Correct statement: The complete oxidation of a molecule of glucose in skeletal muscle produces a net of 38 ATP.
2ATPs and 2 NADH are produced during the glycolysis phase, 2NADH and 2 Acetyl CoA are produced during the transition phase of pyruvic acid to acetyl CoA. 2GTP, 6NADH, 2FADH2 are produced during the Kreb's cycle. Now, 1NADH produces 3ATP and 1 FADH2 produces 2 ATP. So, the total is 2+ 30+6 ATP molecules = 38 molecules of ATP.
2. The given statement is false.
Correct statement: The maximum ability to utilize oxygen during exercise is called the VO2 max.
VO2 max is a primary measure of cardiorespiratory fitness. Cardiorespiratory fitness refers to the ability of the respiratory systems to supply oxygen to the muscles during exercise.
3. The given statement is true.