Whole grains are an important part of your diet. This article discusses the advantages of whole grains, how you can incorporate them into your meals, and there are even some recipes to try.

Take this interactive, multiple-choice quiz over microorganisms, then review your score and any missed questions at the end.

Take an interactive quiz over viruses. After completing the quiz, check your score, and then revisit any incorrect question for further review.

Take an interactive quiz over bacteria. After completing the quiz, check your score, and then revisit any incorrect question for further review.