Question

Which is a characteristic of fast-­twitch muscle fibers?

A. They contain more myoglobin than slow­t-witch fibers.
B. They are resistant to fatigue.
C. They have fewer mitochondria than slow-­twitch fibers.
D. They require high amounts of oxygen in order to function

Answer 1

The answer is C.

Step-by-step explanation:

Due to fewer capillaries, mitochondria, myoglobin, and lower oxygen transport, type II- fast twitch muscle fibers are "fast" or quick to fatigue. With their short-term contractions, they also create greater force and strength.