At which ph levels did catalase cease to function?

a  pH level lower or higher than the optimum level between pH 7 and pH 11 

Catalase is an enzyme that speeds up chemical reactions in the human body. It breaks down hydrogen peroxide in the liver, but can also damage DNA. Catalase prevents damage by accelerating the breakdown of hydrogen peroxide into oxygen and water creating bubbles.

The optimum pH level of catalase is between pH 7 and pH 11, a  pH level lower or higher than this the catalase ceases to function.

A: rachel carson :

If these are the missing choices: a. to determine skin temperature, place the back of your hand against the patient's skin.b. determine body temperature by touching the patient's hands and feet.c. skin temperature will tell you very little about this patient's condition or well-being.d. the patient's skin temperature and color will likely be warm and red.my answer is: a. to determine skin temperature, place the back of your hand against the patient's skin. using the back of the hand to check for temperature rather than the palm is more effective because the back of the hand has more nerves that can feel and transmit the temperature than the palm.