Exercise 6 - Metabolic Rate

1. The basic premise in animals is that the _________ (larger/smaller) the animal the ___________ (faster/slower) the metabolic rate.

2. Endotherms are ________ (cold/warm) blooded and Ectotherms are __________ (cold/warm) blooded.

3. Humans and rats are __________ (endotherms/ectotherms) and frogs and lizards are ________ (endotherms/ectotherms).

4. The ratio between surface and and volume is that the larger the animal the _________

(smaller /larger) the ratio.

5. A small animal having a larger surface area to volume ratio will __________ (lose/maintain/gain) body heat as compared with a large animal with a smaller ratio of surface area to volume.

6. The function of putting soda lime in the animal's metabolic chamber is to absorb the excess ___________.

7. Why must the mouse be limited in its movement inside the metabolic chamber, whereas the rat can be left on its own?

______________________________________________________________

8. What is STP? _____________________________________________

9. Why do we have to correct for STP?________________________________

10. Why do we divide the animal's oxygen consumption by its weight?

________________________________________________________________

11. How does an endothermic animal respond to environmental conditions such as: heat ______________ and cold _____________?

12. How does hibernation solve the metabolic problems for brown bears? _________________

13. How does daily torpor help humming birds to survive the night?

______________________________________________________

14. How is heart rate related to body heat loss or gain? _________________________

15. Why is beneficial for whales to be so large? ______________________________