How to make vegetables tasty. 1  Diet and Nutrition Tips for Women: Eating Right to Look and Feel Your Best at Every Stage of Life. 2  Healthy Food for Kids:Easy Tips to Help Your Children and Teens Eat Healthier. 3  Emotional Eating:How to Recognize and Stop Emotional and Stress Eating.
The catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism.he catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism.
The catalase test is done by placing a drop of hydrogen peroxide on a microscope slide. Using an applicator stick, a scientist touches the colony, and then smears a sample into the hydrogen peroxide drop. 1  If the mixture produces bubbles or froth, the organism is said to be 'catalase-positive'.he presence of catalase in a microbial or tissue sample can be tested by adding a volume of hydrogen peroxide and observing the reaction. The formation of bubbles, oxygen, indicates a positive result.