Question

question 2 (4 points)
(02.05 lc)
electricity is added to recharge a battery. what is added to adp to form atp?

a a second ribose group

b a third phosphate group

c a third ribose group

d a second phosphate group

question 3 (4 points)
(02.05 lc)
food taken in by living organisms can be broken down and used to

a build starch molecules from glucose

b break down atp molecules

c build atp molecules from adp

d break the bonds in starch molecules

Explanation:

Question 2

To form ATP (adenosine triphosphate) from ADP (adenosine diphosphate), a third phosphate group is added. ADP has two phosphate groups, and ATP has three. So the correct option is the one that says a third phosphate group.

Food taken in by organisms is broken down to release energy, which is used to build ATP from ADP (adding a phosphate group). Option a is about building starch (storage), b is incorrect as ATP is made not broken down for energy here, d is about breaking starch (initial step but not the end use of food energy). So the correct option is c.

Answer:

b. A third phosphate group

Question 3