BHK Bachelor of Kinesiology MCQ 2

Question 1

Which energy system provides ATP most rapidly during a maximal 100-meter sprint?

Accepted Answer

Phosphocreatine (PCr) system

Answer

The phosphocreatine system regenerates ATP almost instantaneously without oxygen, making it the primary fuel source during maximal, very short-duration efforts.

Question 2

The sliding filament theory of muscle contraction states that sarcomere shortening occurs because:

Accepted Answer

Actin filaments slide over myosin filaments toward the Z-discs

Answer

During contraction, thin actin filaments slide inward toward the center of the sarcomere (Z-discs move closer together) while filament lengths remain unchanged.

Question 3

Which of the following best describes the concept of specificity in exercise training?

Accepted Answer

The body adapts specifically to the type of stress placed upon it

Answer

The SAID principle (Specific Adaptations to Imposed Demands) states that the body adapts in a manner specific to the type, intensity, and volume of exercise performed.

Question 4

During normal gait, which phase of the gait cycle has the highest ground reaction force?

Accepted Answer

Initial contact (heel strike)

Answer

Ground reaction forces peak during initial contact (heel strike), often reaching 110–120% of body weight as the foot accepts the load of the falling center of mass.

Question 5

The oxygen dissociation curve shifts to the right (Bohr effect) in response to:

Accepted Answer

Increased temperature, CO₂, and decreased pH

Answer

Increased temperature, CO₂, and acidity (lower pH) reduce hemoglobin's affinity for oxygen, facilitating O₂ release to metabolically active tissues.

BHK - Bachelor of Kinesiology Practice Test

BHK - Bachelor of Kinesiology Practice Test

BHK Bachelor of Kinesiology MCQ 2