Hydrogen peroxide is a waste substance produced in cells. Hydrogen peroxide is harmful in high concentrations, so cells must decompose it
quickly. Catalase is an enzyme found in living organisms and helps to
decompose hydrogen peroxide into water and oxygen.
2H202
2H20 + O2
Catalase has an optimum pH of 9, and a working range of 7-11.
Catalase has an optimum temperature of 37°C.
What would be the effect of increasing the concentration of hydrogen
peroxide solution on the rate of catalase activity?​

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size