This format is recommended for printing or viewing. It will require Adobes free Acrobat Reader software. The learner will develop an understanding of the physical, chemical and cellular basis of life.
Teachers can choose to use some or all of the procedures.
Teachers can also choose to have students develop their own procedures for some or all of the activities. Catalase, an enzyme found in almost all aerobic cells, speeds up the breakdown of the hydrogen peroxide. Sometimes the reduction of oxygen to water is incomplete, causing the production of superoxide, an extremely toxic substance. An enzyme breaks the superoxide down into water and hydrogen peroxide, which is less toxic. Catalase then breaks the hydrogen peroxide down into benign water and oxygen gas.