A fish will adjust to lower water temperatures by ____.
A) activating more action potentials
B) increasing the amplitude of its action potentials
C) recruiting different muscle fibers
D) returning to its basal metabolic rate

Question

Quizplus · Accepted Answer

When exposed to lower water temperatures, fish will typically recruit different muscle fibers to generate more forceful movements, allowing them to swim through the cold water. This is known as cold-induced plasticity and allows them to maintain their activity level in cooler water without having to use more energy (i.e., return to their basal metabolic rate). Fish do not need to activate more action potentials, as this would not directly address the issue of adjusting to lower temperatures. Similarly, increasing the amplitude of action potentials would not help the fish adjust to colder water temperatures.

A Fish Will Adjust to Lower Water Temperatures by ____