Using forceps and scissors cut a small piece of liver and add it to the test tube. push it into the hydrogen peroxide with a stirring rod. observe the bubbles. what gas is being released?

oxygen

Explanation:

Catalase is an enzyme found in living tissuea of plants and animals. Its role in living tissues is to break down hydrogen peroxide produced during cellular metabolism. Hydrogen peroxide is ahighly toxic substance which should not be allowed to accumulate in the tissues. If it were to accumulate in the tissues, it would interfere with cellular metabolism. Enzyme catalase breaks down hydrogen peroxide into water and oxygen which are non-toxic substances. Liver contains enzyme catalase.

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.