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. why hydrogen is broken down, what two substances are created?

How does a noncompetitive inhibitor reduce an enzyme’s activity?

Air can be considered a mixture. which statement does not explain why?

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be: