Assume there are two animals identical to each other in all respects except that one is an endotherm whose body temperature is 370C and the other is an ectotherm. The two animals were kept in the same cage at 310C with plenty of food and water. In one of these animals the rate at which nutrient molecules move from the small intestine lumen to the blood is considerably greater than in the other. Which animal is able to move the greater number of molecules? Explain carefully WHY it has a higher rate than the other.
The best answer is NOT that molecules diffuse faster at higher temperatures.
