Question 16
HomeostasisThe body temperature of a mammal has to be maintained at a fairly constant level because
- A.excessive heat is continually lost by the body to the environment.
- B.their body temperature is always higher than that of the environment
- C.evaporation of sweat cools the body
- D.metabolic activities function best at certain temperature
Show the answer and explanation
Answer: D (metabolic activities function best at certain temperature)
Explanation
Body reactions are controlled by enzymes, which work best at an optimum temperature, so keeping the temperature steady keeps metabolism efficient.