Enzymes are proteins that enable molecules to undergo chemical change. Hydrogen peroxide (H2O2) is a compound that is present in almost all living organisms. But hydrogen peroxide is harmful to cells. Consequently, most living organisms have an enzyme called peroxidase to protect against H2O2. Use what you have learned to explain how peroxidase behaves like an enzyme to help protect the body against H2O2. (hint: What do enzymes do?)

Adoctor is trying to diagnose a patient with dry skin. which of the following resources would be the most ? a magazine ad about soft skin a growth chart online articles about dry skin medical books

How many types of rock can form from the rock cycle

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.