Unit 3, Concept 2: Adenosine Triphosphate

purpose of ATP

carry and store energy for cell functions- directly powers the body

what does ATP stand for

adenosine triphosphate

where is most energy in ATP stored

in the phosphate (specifically between the last and middle phosphate groups)

draw ATP and list its three parts

adenine, ribose, and phosphate

adenine

nitrogen base

ribose

sugar ring

phosphates

groups held together with high energy bonds

describe the ATP-ADP cycle

In the ATP-ADP cycle, energy is released when a phosphate group is removed. ADP is then changed back into ATP when a phosphate group. is added.

what is recycled

ADP

what is not recycled

the phosphates

what is the energy used for when phosphate is removed

energy is used for the cell and it becomes ADP and a phosphate, this is an exothermic reaction

where does the initial energy come from in phosphate removal

carbon-base molecules in food

ATP

only molecule that directly powers the body

ADP

the compound that remains when a phosphate group is removed from ATP, releasing energy (Adenosine Diphosphate)

chemiosmosis

movement of ions down a concentration gradient

What process is ATP produced?

cellular respiration