Before atp is split into adp and pi, it holds what type of energy?

It intially will be holding chemical energy (used in chemical processes). After it divides into adp and pi they'll be holding kinetic energy.

Hope it helped,

BioTeacher101

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.