Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
How does ATP participate in energy-coupling reactions? a) Hydrolysis of ATP fuels endergonic reactions. b) Hydrolysis of ADP fuels endergonic reactions. c) Synthesis of ATP fuels exergonic reactions. d) Synthesis of ADP fuels exergonic reactions.
A
Hydrolysis of ATP fuels endergonic reactions.
B
Hydrolysis of ADP fuels endergonic reactions.
C
Synthesis of ATP fuels exergonic reactions.
D
Synthesis of ADP fuels exergonic reactions.
Verified step by step guidance
1
Understand the concept of energy-coupling: Energy-coupling in cells involves using energy released from exergonic reactions to drive endergonic reactions. ATP (adenosine triphosphate) is a key molecule in this process.
Recognize the role of ATP hydrolysis: ATP hydrolysis is an exergonic reaction where ATP is broken down into ADP (adenosine diphosphate) and an inorganic phosphate, releasing energy.
Identify how ATP hydrolysis fuels endergonic reactions: The energy released from ATP hydrolysis is used to drive endergonic reactions, which require an input of energy to proceed.
Differentiate between ATP and ADP in energy coupling: While ATP hydrolysis releases energy, the synthesis of ATP from ADP and inorganic phosphate is an endergonic process that requires energy input, often from exergonic reactions.
Connect the concepts: In cellular metabolism, ATP acts as an energy currency, where its hydrolysis provides the energy needed for various cellular processes, effectively coupling exergonic and endergonic reactions.