1)What is an enzyme?

2)How does hydrogen peroxide get into cells ?

3)how does a cell deal with the buildup of hydrogen peroxide?

4) what would happen if a cell couldn’t make catalase?

5)When hydrogen is broken down, what two substances are created?

THIS IS ANSWER 1 ONLY

An enzyme is a substance that acts like a catalyst in living organisms , regulating the rate at which chemical actions proceed without itself being altered in the process. Simple answer from Google.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.