Bio 100

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ASU BIO 100 EXAM 3 PRACTICE QUESTIONS - SPRING 2016 1. Compare and contrast how positive and negative feedback mechanisms are used to maintain homeostasis. Use these concepts to describe: * The maintenance of blood glucose levels * The release of platelets to form blood clots. 2. What does it mean if an organism is an ectotherm? Endotherm? Give an example of each. 3. Describe the primary functions of each type of body tissue and give examples of each. 4. Herbivorous mammals tend to have extremely long digestive systems, especially the intestines; omnivores have intermediate length intestines; and carnivores have extremely short intestines. What might be a logical explanation for this pattern? 5.…show more content…
12. Both the nervous system and the endocrine system are used to convey messages throughout the body and coordinate organs, systems, and behavior. Compare and contrast how these two systems function. 13. Identify the cellular components of blood, their functions and where they are produced in the body. 14. What is hemoglobin, where is it found, and what does it do? 15. Emphysema can be a serious disease, but it damages not only your lungs but often the heart. Why does a respiratory disease also affect the circulatory system? 16. You have become a member of a hot shot Criminal Investigative Team in the Phoenix police department. You are asked to lead your first murder investigation, but the only clues are old blood spots of the victim found near his body and blood on the clothes of a suspect. Because the main suspect is about ready to leave the country, you are asked to at least provide preliminary evidence that the blood found on his shirt could match that found at the crime scene so an arrest warrant can be issued quickly. You amaze your colleagues by simply looking through a microscope and determining from the nuclei of the red blood cells on the suspect’s shirt that, based on this evidence, he is unlikely to be guilty. How could you be so sure of this conclusion? 17. Describe the structure of a neuron and how it transmits a nerve impulse. 18. A pharmaceutical company is
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