Your Cell Study Tool - Create a study guide that will help you learn the different organelles of the cell. Healthy human function depends on a variety of interacting and reacting systems. You can try some of the brain test given to mountain climbers at this NOVA site. Brain Problems - Unfortunately, sometimes the brain is affected by disease. Find out more about brain disease and how doctors deal with it in this activity.
Scientific investigation leads to new knowledge about body systems and new medical applications.