Salmon Returning to Spawn in Their Native Stream Undertake a Journey

Multiple Choice

Salmon returning to spawn in their native stream undertake a journey that requires extreme endurance.An examination of the muscles used to perform this activity would reveal

A) mostly smooth muscle fibers.
B) a high number of gap junctions.
C) mostly glycolytic fibers.
D) many mitochondria per cell.
E) pale color of the cells