What is the chemical reaction that lactase catalyzes?

Amylase becomes denatured at a temperature of 80°c. during an experiment to study the effect of varyingtemperature on enzyme activity, amylase’s reactivity with starch was measured at body temperature (37°c), andthen again at an increased temperature of 42°c. how would this increase in temperature affect the experiment

Study this image which statement best describes the rock shown check all that apply

Aresident is five feet tall.what is the measurements in iches