15.3) In the previous problem, you drew the products for the phosphorylation of ADP reaction (shown below). Does that reaction require energy or release energy when it occurs? ANSWER: This reaction requires energy in order to occur. phosphoryl group OH inorganic phosphate (P₁) NH₂ P-OCH₂ N +₂₁₂= |||| -OCH₂ O H H H H OH OH adenosine diphosphate (ADP) O H+ H H H N OH OH adenosine triphosphate (ATP) H NH₂ + H₂O
15.3) In the previous problem, you drew the products for the phosphorylation of ADP reaction (shown below). Does that reaction require energy or release energy when it occurs? ANSWER: This reaction requires energy in order to occur. phosphoryl group OH inorganic phosphate (P₁) NH₂ P-OCH₂ N +₂₁₂= |||| -OCH₂ O H H H H OH OH adenosine diphosphate (ADP) O H+ H H H N OH OH adenosine triphosphate (ATP) H NH₂ + H₂O
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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I don't get it at all. I struggled with my homework. Can you help me? Can you help me to explain to me, please?
Transcribed Image Text:15.3) In the previous problem, you drew the products for the phosphorylation of ADP reaction (shown below). Does that reaction
require energy or release energy when it occurs?
ANSWER: This reaction requires energy in order to occur.
phosphoryl group
"o-
N
=+=+|||||
H+
OH
inorganic phosphate
(P₁)
O-P-OCH₂
H
H
H
NH₂
OH OH
adenosine diphosphate
(ADP)
0-P-OCH₂
H
H
H
OH
adenosine triphosphate
(ATP)
OH
H
NH₂
N
+ H₂O
EXPLANATION:
Adding a phosphoryl group to ADP in order to form ATP requires energy. The positive value of AG for this reaction (7300
Joules per mole of ADP) indicates that the reaction requires energy in order to occur. This reaction will not occur
spontaneously unless external energy is provided. Catabolic metabolic pathways often use the energy contained in food to
drive the transfer of phosphoryl groups to ADP, thereby forming ATP.
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