J. Moore BIO 103 DB 1 and DB2

Please answer each Discussion Board Separate

Discussion 1: Physical and Chemical Changes

For this discussion I would like for you to view the video below and give me 2 examples of a physical change and 2 examples of a chemical change while also explaining what makes those examples a chemical or physical change.

Chemical Changes: Crash Course Kids #19.2 - YouTube

Discussion 2: Cells and Disease Discussion

Scientists now know that virtually every major disease that manifests symptoms has its origin in the cell.  Your textbook discusses Tay-Sachs disease, Pompe's disease and cystic fibrosis in chapters 4 and 5 on cell and membrane structure and function.  Briefly highlight a disease and describe what is occurring at the cellular level which ultimately results in visible signs of illness.  For example, cystic fibrosis is caused by a faulty chloride channel in the plasma membrane which results in a thick mucus that collects in the airways and in the pancreatic and liver ducts. You can highlight any disease except the three that were mentioned by me above.  Please identify the reason you chose to highlight a particular disease such as it is found in your family history, or you knew someone with the disease or simply whether you were interested and just wanted to lean more about it.