Exercise Physiology Examination
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Exercise physiology is the study of
A. Plant metabolism
B. Disease transmission
C. How the body responds and adapts to physical activity
D. Animal classification
Answer: C. How the body responds and adapts to physical activity
Rationale: Exercise physiology examines acute responses and long-term
adaptations of body systems during exercise.
2. The primary source of energy for muscle contraction is
A. DNA
B. Oxygen
C. Protein
D. ATP
Answer: D. ATP
Rationale: ATP provides immediate energy required for muscle fiber contraction.
3. The basic contractile unit of skeletal muscle is the
A. Neuron
B. Tendon
,C. Sarcomere
D. Sarcomere
Answer: D. Sarcomere
Rationale: Sarcomeres contain actin and myosin filaments responsible for muscle
contraction.
4. The protein responsible for muscle contraction by pulling actin is
A. Collagen
B. Elastin
C. Hemoglobin
D. Myosin
Answer: D. Myosin
Rationale: Myosin heads bind to actin and generate force during contraction.
5. The thin filament in skeletal muscle is composed mainly of
A. Myosin
B. Collagen
C. Actin
D. Keratin
Answer: C. Actin
Rationale: Actin forms the thin filaments that interact with myosin during
contraction.
6. The sliding filament theory explains
A. Bone growth
B. Nerve transmission
C. Hormone production
D. Muscle contraction
,Answer: D. Muscle contraction
Rationale: The sliding filament theory describes actin and myosin interaction
during contraction.
7. The nervous system controls skeletal muscle contraction through
A. Hormones
B. Red blood cells
C. Motor neurons
D. Platelets
Answer: C. Motor neurons
Rationale: Motor neurons transmit signals from the nervous system to skeletal
muscles.
8. The junction between a motor neuron and muscle fiber is called the
A. Synapse
B. Sarcomere
C. Neuromuscular junction
D. Tendon
Answer: C. Neuromuscular junction
Rationale: The neuromuscular junction allows nerve signals to activate muscle
fibers.
9. The neurotransmitter released at the neuromuscular junction is
A. Dopamine
B. Serotonin
C. Insulin
D. Acetylcholine
Answer: D. Acetylcholine
, Rationale: Acetylcholine initiates muscle fiber activation.
10. Type I muscle fibers are also called
A. Fast glycolytic fibers
B. White fibers
C. Slow-twitch fibers
D. Power fibers
Answer: C. Slow-twitch fibers
Rationale: Type I fibers contract slowly and are resistant to fatigue.
11. Type II muscle fibers are characterized by
A. Slow contraction speed
B. High endurance only
C. Low force production
D. Fast contraction speed
Answer: D. Fast contraction speed
Rationale: Type II fibers generate rapid and powerful contractions.
12. Aerobic metabolism requires
A. Nitrogen
B. Calcium only
C. Oxygen
D. Carbon dioxide
Answer: C. Oxygen
Rationale: Aerobic energy production uses oxygen to generate ATP efficiently.
13. Anaerobic metabolism occurs
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Exercise physiology is the study of
A. Plant metabolism
B. Disease transmission
C. How the body responds and adapts to physical activity
D. Animal classification
Answer: C. How the body responds and adapts to physical activity
Rationale: Exercise physiology examines acute responses and long-term
adaptations of body systems during exercise.
2. The primary source of energy for muscle contraction is
A. DNA
B. Oxygen
C. Protein
D. ATP
Answer: D. ATP
Rationale: ATP provides immediate energy required for muscle fiber contraction.
3. The basic contractile unit of skeletal muscle is the
A. Neuron
B. Tendon
,C. Sarcomere
D. Sarcomere
Answer: D. Sarcomere
Rationale: Sarcomeres contain actin and myosin filaments responsible for muscle
contraction.
4. The protein responsible for muscle contraction by pulling actin is
A. Collagen
B. Elastin
C. Hemoglobin
D. Myosin
Answer: D. Myosin
Rationale: Myosin heads bind to actin and generate force during contraction.
5. The thin filament in skeletal muscle is composed mainly of
A. Myosin
B. Collagen
C. Actin
D. Keratin
Answer: C. Actin
Rationale: Actin forms the thin filaments that interact with myosin during
contraction.
6. The sliding filament theory explains
A. Bone growth
B. Nerve transmission
C. Hormone production
D. Muscle contraction
,Answer: D. Muscle contraction
Rationale: The sliding filament theory describes actin and myosin interaction
during contraction.
7. The nervous system controls skeletal muscle contraction through
A. Hormones
B. Red blood cells
C. Motor neurons
D. Platelets
Answer: C. Motor neurons
Rationale: Motor neurons transmit signals from the nervous system to skeletal
muscles.
8. The junction between a motor neuron and muscle fiber is called the
A. Synapse
B. Sarcomere
C. Neuromuscular junction
D. Tendon
Answer: C. Neuromuscular junction
Rationale: The neuromuscular junction allows nerve signals to activate muscle
fibers.
9. The neurotransmitter released at the neuromuscular junction is
A. Dopamine
B. Serotonin
C. Insulin
D. Acetylcholine
Answer: D. Acetylcholine
, Rationale: Acetylcholine initiates muscle fiber activation.
10. Type I muscle fibers are also called
A. Fast glycolytic fibers
B. White fibers
C. Slow-twitch fibers
D. Power fibers
Answer: C. Slow-twitch fibers
Rationale: Type I fibers contract slowly and are resistant to fatigue.
11. Type II muscle fibers are characterized by
A. Slow contraction speed
B. High endurance only
C. Low force production
D. Fast contraction speed
Answer: D. Fast contraction speed
Rationale: Type II fibers generate rapid and powerful contractions.
12. Aerobic metabolism requires
A. Nitrogen
B. Calcium only
C. Oxygen
D. Carbon dioxide
Answer: C. Oxygen
Rationale: Aerobic energy production uses oxygen to generate ATP efficiently.
13. Anaerobic metabolism occurs
