Mr. Andersen shows you how to sink leaf chads in preparation for the AP Biology photosynthesis lab. An empty syringe is used to remove gas from the leaves before the lab. As the chloroplasts absorb light they produce oxygen bubbles which...

In this video, Paul Andersen explains how energy is used in chemical processes and everyday life. Students should understand that energy is neither created or destroyed but is converted. Most of the energy is delivered to our planet from...

Do you know how plants get energy? Plants use a process called photosynthesis to produce a sugar. This video gives an overview of how plants take light energy to convert it to chemical energy. [2:30]