Biology CLEP Prep Practice Exam

Which of the following is true about endothermic organisms?

1. They produce heat

2. They absorb heat

3. They take in energy

4. They release energy

The correct answer is: They absorb heat

Endothermic organisms are those that can maintain a stable body temperature even when the temperature of their environment changes. This means they are able to absorb heat from the environment and use it to maintain their internal temperature. Option A is incorrect because endothermic organisms do not produce heat, they absorb it. Option C is incorrect because although they do take in energy, it is not the only characteristic that defines endothermic organisms. Option D is also incorrect because they do not release energy, they use it to regulate their body temperature. Therefore, the correct answer is B They absorb heat.