anatomy

1. Give examples of the four forms of energy in action. 2. What are the four most common elements in the body? What is the role of each one? 3. Explain what an isotope and a radioisotope are. How does radioactive decay help create PET scans? List one example where radioisotopes are used to tag molecules with radioisotopes. 4. On the Web find one actual picture of each of the following tests (X-Rays, CAT scans, DSR's, PET scans, Sonography, and MRI's). List the URL's for each one and describe them briefly. Describe the radiation exposure of each test (if any). Which one should be used to diagnose a broken fibula, Alzheimer's Disease, torn cartilage in the knee, a brain tumor and a fetus in utero. 5. What is a covalent bond? Give an example. 6. Why is acid-base balance absolutely critical in the body? What is the pH of blood? Why can it only vary by .05 either way? What is an example of a blood buffer and how does it work? 7. What is the pH of gastric juice in the stomach and why is it necessary? What is the purpose of taking antacids? 8. Look online to find out what electrolytes are in Gatorade. Why are they so important? When might you need to drink Gatorade instead of water? 9. What are examples of inorganic compounds? How can you tell them apart from organic compounds? 10. Do the words carbohydrate and sugar mean the same thing? What are examples of monosaccharides and polysaccharides? What are carbohydrates used for in the body? Prove or disprove the following statement: "It doesn't matter what form you eat your carbohydrate in because it all becomes glucose in the blood." 11. Lipid or fat comes in many forms; what are they? What is the difference between saturated and unsaturated fats? Why do we care? 12. What is the difference between proteins and amino acids? What is the function and importance of enzymes? 13. Where are nucleic acids found? What are the two types? How do these two types differ in function? 14. What is ATP? What are three examples of how ATP drives cellular work? 15. Tell us something about the use of DNA fingerprinting as a vital tool in forensic medicine (on the Web). 16. In the treatment of disease why is DNA and its structure more important to you than to me? Do you think it is likely that we will be treating most diseases by altering DNA in the future? Do you think that this is a good idea, why or why not?