Why did the dna migrate to the positive pole of the electrophoresis chamber? in your response, discuss the chemical structure of dna.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

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

What is the main fuel source for the work of the cell