Refer to the Graph Below Showing the Capacity of Three

question 74

Multiple Choice

Refer to the graph below showing the capacity of three systems that provide ATP for muscle contraction in humans.Based on the diagram,which statement is true?

• A) The system of curve A metabolizes carbohydrates to pyruvate and lactate.
• B) The system of curve B comes on line within seconds but lacks sustained efficiency.
• C) The system of curve B uses ATP produced by oxidative metabolism.
• D) The system of curve C uses preformed ATP and creatine phosphate.
• E) The system of curve C enables fast-twitch fibers to generate force quickly.

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Definitions:

Hyaluronic Acid

A natural substance found in the body, particularly in fluids in the eyes and joints, acting as a lubricant and shock absorber.

Lubricant

A lubricant is a substance used to reduce friction between surfaces in contact, minimizing wear and facilitating smooth movement.

Joint Cavities

Structures in the human body where two bones meet, allowing for movement and providing a protective space for organs.

Proteoglycan

Large molecules found in the extracellular matrix of connective tissues, consisting of a protein core and glycosaminoglycan chains; important for tissue hydration and elasticity.