Think Back

Cristina read an article about some of the world’s weirdest animals. By learning about evolution and natural selection, Cristina could begin to see the different evolutionary reasons behind the extreme features some animals have. For example, the aye-aye, a mammal native to Madagascar, has evolved to have an extra long middle finger, which it can use to dig grubs out of trees. We’ll learn more about how these types of traits are selected for in the chapter “Theory of Evolution.”

The next article Cristina read talked about GMOs (genetically modified organisms) and the risks they have. In order to truly understand potential risks of genetically modified foods, Cristina will need to first understand the science behind these foods. How are GMOs created? We’ll learn more about this in the chapter “Modern Biology.”

Cristina then looked at an article about the paleo diet. In order to survive, humans require specific nutrients. While we won’t get into too much depth about nutrition in this course, we will learn about different biological macromolecules in “Important Biological Macromolecules.” These macromolecules include categories you may recognize, like proteins, lipids (more commonly called fats), and carbohydrates. In that chapter, we’ll learn about the roles these molecules play in our bodies—we’ll learn the essential functions they perform. With this knowledge, Cristina could better decide what she should or shouldn’t remove from her diet.