This activity demonstrates the use of carbon by an aquatic plant. The process of photosynthesis can be represented by the reaction: CO2 + H20 + light _ C6H12O6 + O2. There are two distinct steps: the light dependent reactions (involving H20) and the light independent reactions (involving CO2). The light reactions supply the energetic molecules (ATP and NADPH) required to carry out the fixation of carbon from CO2 into larger organic molecules that can be formed into glucose. Though the carbon fixation reactions do not require light, they are dependent upon the energy (in the form of ATP and NADPH) supplied by the light reactions.
Related Resources:
Teacher Demo: Bending Light - Part II
Categories: Teacher Demonstration
In this demonstration, laser light is bent as it travels through a sugar (or salt) solution of varying concentrations. read more
Demonstrating Chemical Concepts
Categories: General Interest, Teacher Demonstration
This PowerPoint presentation offers teachers ideas for demonstrations of multiple concepts across grades 9 through 12 chemistry classes. read more
Teacher Demo/Student Activity: Charging by Contact
Categories: Lab/Student Activity, Teacher Demonstration
In this demo, a polyethylene strip is charged by rubbing with wool. The charged strip is then used to charge a neutral object, a pith ball, by contact. This demo can be done as a student activity. read more