Ex Phys Final Exam Questions and

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Ex Phys Final Exam Questions and Answers Latest Version Already Passed

Which of the following is the primary energy system used during a 100-meter sprint?

• Aerobic glycolysis
• Oxidative phosphorylation
• Lactic acid system

✔✔ D. ATP-PC system

What happens to stroke volume during moderate-intensity aerobic exercise?

• It decreases significantly

✔✔ B. It increases

• It remains unchanged
• It fluctuates randomly

Which hormone is primarily responsible for stimulating red blood cell production?

• Insulin

✔✔ B. Erythropoietin

• Glucagon 1 / 4

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• Cortisol

The term "VO₂ max" refers to:

• The amount of oxygen stored in muscles
• The rate at which oxygen is removed from blood

✔✔ C. The maximum amount of oxygen the body can utilize during exercise

• The oxygen used at rest

During steady-state aerobic exercise, blood lactate levels:

• Increase continuously

✔✔ B. Reach a plateau

• Drop to zero
• Become unpredictable

Which muscle fiber type is most fatigue-resistant?✔✔ A. Type I

• Type IIa
• Type IIx 2 / 4

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• Fast glycolytic

During prolonged endurance activity, what is the primary energy source after 90 minutes?✔✔ A. Fatty acids

• Creatine phosphate
• Glycogen

D. ATP

Which of the following increases as a result of endurance training?✔✔ A. Mitochondrial density

• Anaerobic enzyme concentration
• Resting heart rate
• Lactic acid production at rest

Which substrate yields the highest ATP per molecule?

• Glucose

✔✔ B. Fat

• Protein 3 / 4

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• Lactic acid

What happens to cardiac output during maximal exercise?

• It decreases
• It stays the same

✔✔ C. It increases dramatically

• It doubles and then drops

Which of the following would most likely increase after 6 weeks of resistance training?

• Lung capacity

✔✔ B. Muscle cross-sectional area

• Resting blood glucose
• Hematocrit

The Bohr effect describes the relationship between:

• Oxygen and blood pressure

✔✔ B. pH and hemoglobin’s oxygen affinity

• CO₂ and breathing rate
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