In your experimental design, be sure to include proper controls. Describe the logic by which it is claimed that all living organisms are derived from a common ancestor. Give specific examples. Refer to Figure 1.20. Do a little research and describe in scientific notation how many hydrogen atoms would fit between the center of the earth and the center of the sun.
Celiac disease is an autoimmune disease with a small heritable component.
It results from immunological attack on gliadin, a protein found in gluten-containing foods such as wheat. A side effect of this attack is inflammation in the intestine, resulting in the loss of villi from the intestinal epithelium. Using the information found at OMIM , describe the consequences of this disease. Describe the mathematical logic by which a spherical cell would achieve a larger volume than a flat cell. In a nutrient poor environment, a cell may need to maximize surface relative to its volume, in order to best absorb available nutrients.