11/29/25 concept2 unit3

purpose of atp

stores and provides energy for things your cells need to do

step one

atp is ready

step two

cell needs energy and enzyme gets to work

step three 

atp breaks bond between second and third phosphate group and releases burst of energy

step 4

the released energy powers the cell

step five

your cell recharges using energy from food or cellular respiration

step six 

cycle repeats

what does the released energy do

powers movement builds things transport work and chemical reactions

what happens when a phosphate bond breaks

the energy gets transferred to other molecules

why is the process of breaking down atp considered exothermic

this is when the bonds are broken and energy is released

why is the process of forming atp considered endothermic

the phosphate bonds are high energy, which means they need energy to absorb to be created