Q: Which equation correctly represents the hydrolysis of ATP to release energy?

$$ \mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy} $$

Q: Which formula best represents the net ATP yield from aerobic metabolism of one glucose molecule?

$$ \text{Glucose} + 6\,\mathrm{O}_2 \rightarrow 6\,\mathrm{CO}_2 + 6\,\mathrm{H}_2\mathrm{O} + 36\text{-}38\,\mathrm{ATP} $$

Question 1

Which of the following best describes the role of creatine phosphate (CP) in the ATP-CP energy system during high-intensity, short-duration exercise?

Accepted Answer

CP donates a phosphate group to ADP, rapidly regenerating ATP.

Question 2

During a 400-meter sprint lasting approximately 45 seconds, which ATP-generating energy system provides the largest proportion of ATP?

Accepted Answer

Glycolysis

Question 3

Which equation correctly represents the hydrolysis of ATP to release energy?

Accepted Answer

$$ \mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy} $$

Question 4

A runner completes a 1000-meter race in 4 minutes. Which energy system is primarily used during the final 600 meters?

Accepted Answer

Aerobic energy system

Question 5

Which of the following statements about glycolysis is TRUE?

Accepted Answer

Glycolysis produces 2 ATP molecules per glucose molecule and 2 pyruvate molecules.

Question 6

Which of the following is a distinguishing feature of the aerobic energy system compared to anaerobic systems?

Accepted Answer

It uses oxygen and produces a large amount of ATP per glucose molecule.

Question 7

During prolonged, moderate-intensity exercise, which substrate is primarily used by the aerobic energy system to generate ATP?

Accepted Answer

Carbohydrates and fats

Question 8

Which of the following best explains why the ATP-CP system is limited in duration?

Accepted Answer

Muscle stores of creatine phosphate are limited and deplete rapidly.

Question 9

Which of the following is TRUE regarding lactate production during exercise?

Accepted Answer

Lactate is produced during anaerobic metabolism when oxygen is limited.

Question 10

A soccer player sprints for 10 seconds, jogs for 2 minutes, and then walks for 5 minutes. Which sequence best matches the primary energy systems used during each activity?

Accepted Answer

ATP-CP system, glycolysis, aerobic energy system

Question 11

Which of the following is the correct order of ATP-generating energy system activation during a maximal-effort 100-meter sprint?

Accepted Answer

ATP-CP system, then glycolysis, then aerobic energy system

Question 12

Which formula best represents the net ATP yield from aerobic metabolism of one glucose molecule?

Accepted Answer

$$ 	ext{Glucose} + 6\,\mathrm{O}_2 ightarrow 6\,\mathrm{CO}_2 + 6\,\mathrm{H}_2\mathrm{O} + 36	ext{-}38\,\mathrm{ATP} $$

Question 13

Which of the following statements about the speed and capacity of ATP production in the three energy systems is correct?

Accepted Answer

ATP-CP system is fastest but has the lowest capacity; aerobic system is slowest but has the highest capacity.

Question 14

Which of the following is a TRUE statement about aerobic energy production?

Accepted Answer

Aerobic metabolism of one glucose can produce 36-38 ATP molecules.

Question 15

Which of the following is the main reason why glycolysis is important during moderate-intensity exercise?

Accepted Answer

It provides ATP quickly when oxygen delivery is limited.

Question 16

Which of the following is NOT a characteristic of the ATP-CP system?

Accepted Answer

Uses oxygen to produce ATP

Question 17

During which type of exercise is the aerobic energy system most dominant?

Accepted Answer

Long-distance running

Question 18

Which of the following best explains the relationship between exercise duration and the contribution of the aerobic energy system?

Accepted Answer

As exercise duration increases, the aerobic energy system's contribution increases.

Question 19

Which of the following is the correct sequence of energy system activation for a 1500-meter race?

Accepted Answer

ATP-CP system, glycolysis, aerobic energy system

ATP Generation and Energy Systems in Exercise

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