Environmental science enthusiasts show what they know at the end of the year by taking this full-fledged final exam. They answer multiple-choice, graph interpretation, and essay-analysis questions, 73 of them in all. Topics range from...

Emerging ecologists need a full understanding of life, from the inner workings of a cell to the complex relationships among organisms. This examination is meant to assess high schoolers after an entire year of courses on the living...

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

Five self-checking quiz questions to check student understanding of mitosis and cytokinesis.