Which light intensity will make photosynthesis happen the fastest? Biology II students worked on a photosynthesis lab testing ambient, dim, and bright light. In this experiment, students began by punching holes in spinach leaves. The disks produced were added to a syringe. The spaces in the leaf disks were filled with a sodium bicarbonate solution, which caused them to sink in the solution. The leaf disks were then exposed to various intensities of light, and observations were made as the cells underwent photosynthesis. (Oxygen produced during photosynthesis made the leaf disks float in water.)
In the following class, the students took their data and turned it into an APA formal lab report, the format commonly used for scientific research journals.