Question

1. label the two large arrows in model 3 with \hydrolysis\ and \phosphorylation.\

cycle
atp + water
energy
energy
adp + phosphate
a b
hydrolysis
phosphorylation

Explanation:

Hydrolysis is the breakdown of ATP to ADP + phosphate, releasing energy. Phosphorylation is the addition of a phosphate group to ADP to form ATP, requiring energy input. Arrow A shows ATP + water breaking down, so it is hydrolysis. Arrow B shows ADP + phosphate combining, so it is phosphorylation.

Answer:

A. hydrolysis
B. phosphorylation