Salmon Returning to Spawn in Their Native Stream Require Extreme

question 4

Multiple Choice

Salmon returning to spawn in their native stream require extreme endurance for the journey. An examination of the muscles used to perform this activity would show that they

• A) have substantial reserves of fuel.
• B) have low levels of ATPase activity.
• C) are well-supplied with blood vessels.
• D) have many mitochondria.
• E) All of the above