Question

atp stands for adenosine triphosphate and contains a ribose, adenine, and three phosphate groups hence the tri.

1. which bond is likely to break?

by what process will that bond break?
is this reaction endergonic or exergonic? exergonic

1. what is energy coupling?

concept 8.4 enzymes speed up metabolic reactions by lowering energy barriers

1. what is activation energy (eₐ)?
2. what effect does an enzyme have on eₐ?

Explanation:

1. The terminal phosphate - phosphate bond in ATP is likely to break. This occurs through hydrolysis. The reaction is exergonic as it releases energy.
2. Energy coupling is the use of an exergonic reaction to drive an endergonic reaction.
3. Activation energy ($E_A$) is the minimum amount of energy that reactant molecules must have to start a chemical reaction. It is the energy barrier that must be overcome for a reaction to proceed.

Answer:

1. The terminal phosphate - phosphate bond in ATP; Hydrolysis; Exergonic
2. The use of an exergonic reaction to drive an endergonic reaction
3. The minimum amount of energy that reactant molecules must have to start a chemical reaction, the energy barrier for a reaction to proceed