turns Fig 1.1 shows to 3 1 Catalase is an enzyme found in plant and animal cells. It catalyses the breakdown of hydrosy peroxide to form water and oxygen. turns 2H202 ugar 2H₂O + or hydrogen peroxide water oxygen The oxygen produced forms a foam. You can measure the height of the foam to determine catalase activity ds A student investigated catalase activity in cooked and uncooked potato tissue. The student: Step 1 cut two potato cylinders so that they were identical in shape and size Step 2 put 5 cm of 3% hydrogen peroxide solution into a test-tube labelled cooked potato Step 3 put 5 cm of 3% hydrogen peroxide solution into a test-tube labelled uncooked potato Step 4 put one of the potato cylinders into a beaker of hot water for five minutes Step 5 removed the potato cylinder from the hot water and put it into the test-tube labelled cooked potato Step 6 put the uncooked potato cylinder into the test-tube labelled uncooked potato Step 7 left the potato cylinders in the 3% hydrogen pe