Question

use the information below to answer questions 9 - 12. in spring when the bears emerge from their dens, they have lost between 15% and 30% of their body weight (mass) - that could be around 120 pounds for a large brown bear. answer the questions below to explain where all the mass went when it was lost. 9. explain why the bears slow their metabolism (using less waste production) during hibernation. a. the bear is getting warmer b. the bear is breathing faster c. the bear is not using as much atp d. the bear is drinking more water 10. bears dont drink during hibernation but still need water. using what you know about cellular respiration, explain how they can still produce water for the body to use. a. carbon dioxide is used to make water b. water produced during cellular respiration is re - absorbed into the blood c. water comes from the bears sweat and diffuses back into the blood through the skin d. atp is used to make more water 11. in hibernation, the bear has used up its supply of glucose. it then has to use stored fat for atp production. using the images above and what you have learned, how could the bear use the stored fats to continue cellular respiration? a. they use the energy stored in the carbon - hydrogen bonds b. they use energy from hydrogen bonds in water c. energy from oxygen is used d. the kidneys produce more heat which the bear uses to make atp 12. most of a bears mass is made of carbon compounds. bears do not urinate, defecate, eat, or drink during hibernation, so where did the mass of the bear go when the bear lost weight? a. the mass is lost from water b. the mass is lost from atp c. the mass is lost from carbon dioxide d. the mass is lost from heat 13. why do diabetics need to take insulin? a. to lower their atp b. to increase their blood glucose c. to lower their glucagon d. to lower their blood glucose 14. why are viruses not considered living? a. they do not have genetic information b. they do not have proteins c. they cannot adapt d. they cannot reproduce on their own

Explanation:

• Question 9: During hibernation, a bear's metabolism slows as it uses less ATP, so the answer is c.
• Question 10: In cellular respiration, water is a by - product. Carbon dioxide is not used to make water in the context of bear's water production during hibernation. Water from cellular respiration is the key, so the answer is not among the given options as none are correct in a strict sense, but if we assume it refers to water from cellular respiration, the concept is correct.
• Question 11: Bears use the energy stored in carbon - hydrogen bonds of fats for cellular respiration, so the answer is a.
• Question 12: During hibernation, the mass lost by the bear is in the form of carbon dioxide produced from the breakdown of carbon - containing compounds, so the answer is c.
• Question 13: Diabetics take insulin to lower their blood glucose levels, so the answer is d.
• Question 14: Viruses are not considered living because they cannot reproduce on their own, so the answer is d.

Answer:

• 9. c. The bear is not using as much ATP
• 10. (No correct option among given ones based on strict cellular respiration knowledge regarding water production)
• 11. a. They use the energy stored in the carbon - hydrogen bonds
• 12. c. The mass is lost from carbon dioxide
• 13. d. To lower their blood glucose
• 14. d. They cannot reproduce on their own