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← Nature & AnimalsWhich effect results when cheetah muscle fibers exhibit faster twitches?
A)Increased anaerobic lactic acid production
B)Elevated oxygen debt accumulation
C)Enhanced stride frequency at sprinting✓
D)Decreased myosin-actin cross-bridge attachments
💡 Explanation
Faster muscle fiber twitch rates enable increased stride frequency through the mechanism of calcium ion kinetics. Because faster calcium cycling enhances cross-bridge activity, cheetahs increase sprint speed; therefore, higher cadence occurs rather than reduced muscle power or metabolic inhibition.
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