Wild turkeys have breast muscles that are capable of explosively fast flight,but only for short distances.These muscles
A) fuel their rapid flight with high levels of mitochondria.
B) have surprisingly low rates of ATPase activity.
C) contain a high proportion of fast-twitch muscle fibers.
D) contain a high proportion of slow-twitch muscle fibers.
E) have substantial reserves of glycogen.

Question

Quizplus · Accepted Answer

The fact that wild turkeys have breast muscles capable of explosively fast flight, but only for short distances, suggests that these muscles are composed of fast-twitch muscle fibers. Fast-twitch fibers are specialized for rapid, high-force contractions over short periods of time, and are therefore well-suited for explosive bursts of activity, like short-distance flight.

Wild Turkeys Have Breast Muscles That Are Capable of Explosively