Adenosine Triphosphate (ATP) and energy transfer

Question 1

Describe the role of ATP.

Answer 1

-It is the body’s only immediate, useable source of energy
- Powers muscle contractions for 2 seconds

Question 2

Describe how ATP provides energy for
muscular contraction.

Answer 2

-Enzyme called ATPase causes breakdown of ATP into
ADP
-High energy bond between last 2 phosphates is broken
-This is an exothermic reaction – producing energy
-This energy powers muscular contraction