Metabolism PPQ

Question 1

North American black bears can hibernate for up to 7 months without food or
water. The bears survive using the fat stores in their bodies. The bears build
up the fat stores during the summer. During hibernation, the heart rate of
black bears decreases from a summer mean of 55 beats per minute to 14
beats per minute. Their metabolic rate falls by 75%.
Black bears can hibernate for up to 7 months without food or water (lines 1−2).

Suggest and explain how.

Answer 1

10.1
1. Fat (store) used in respiration/metabolism;
2. Less energy/food (store) is required due to
low respiration/metabolism

OR 
 
Less energy/food (store) is required due less  
movement; 

3. Gluconeogenesis;

4.Low surface area to volume reduces heat loss

OR 

Fat (layer/insulation) reduces heat loss;

5. Long loop of Henle so less water lost;
6. Water provided from respiration;
7. Reduced/no urination;
8. Less evaporation;