26.(2 points) Explain how negative feedback maintains glucose homeostasis. Make sure you include both entire negative feedback loops.27.Describe a policy that could help preserve biodiversity in CI28.What exercises, activities, or study methods in this class did you find helpful? What would you change if you could?5% Land Remaining
Bio 1402 December 201729. Answer twoof the following (2 points each)a.Do you consider humans a keystone species? Why or why not?1 pointbonus: Extinction of what keystone species would affect humans?b.Describe the path of oxygen from the air to tissues such as the brain, and one mechanism by which smoking decreases oxygen in the train (and other tissues).1 point bonus: For what does your brain use oxygen?c.Describe 2 limits to human population growth1 point bonus:In what situations have you seen these limits in action this year?6
Bio 1402 December 20171.Answer oneof the following (10 points). If you answer more than one, only one will be graded.d.Describe in detail the immune response to a vaccine, and why that protects you from getting sick in the future. Be sure to include: Phagocyte, B cell, T cell, antibodies, infected cell or bacteria, antigen, how the responseprotects you.e.How do you answer a spoken question? Discuss how you take sensory input from your ears and how that results in thinking about an answer, and then moving a pencil to write. Include as much detail and breadth as you can, integrating the sensory/nervous system and the muscle system. Suggestions as points for discussion: How do you detect sound waves? How do signals travel from the ears to the brain and back to fingers? Are there specific regions of the brain that process the signal? How does thought translate into muscle movement? Etc. f.Imagine you’re in charge of Cote d’Ivoire’s forests. A logging company that will bring a lot of money wantsto cut down trees from a large forest. Assume they will follow your rules. Write instructions on how to harvest trees while minimizing the environmental impact, with an explanation for each instruction. Discuss the effects of fragmentation, species-area curves, and pollution, at a minimum. Give them instructions about how you want themto monitor the environment while they harvest, and/or explain the importance of preserving biodiversity or even a particular species of interest. This question is 10 points, so include at least 10 parts. Bonus, up to 3 pointsGall stones occur when minerals in bile block the passage of pancreatic enzymes. The enzymes then digest the pancreas. What types of diets would make gall stones worse? What could you eat to prevent symptoms?7
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- Fall '08
- Bacteria, POINT BONUS, nonspecific inflammatory response, Slow reflex response