Work Step by Step
Option a. is correct. Fast-twitch fibers are lighter in color because they have fewer mitochondria in them. Option b. and c. are correct. The way in which fast-twitch fibers generate energy through anaerobic means by way of the fermentation and creatine phosphate pathways. Option d. is correct. Fast-twitch fibers generate energy for quick bursts of energy such as during a sprint. Therefore, option e is correct.