In an exergonic reaction,
(a) Large molecules are broken down into smaller ones.
(b) Small molecules are assembled into larger ones.
(c) Molecules are rearranged to form new molecules.
(d) Molecules move from reactants to products and back.
(e) Energy is released during the reaction.

검증된 단계별 안내

Step 1: Understand the term 'exergonic reaction' in the context of biochemistry and physiology. An exergonic reaction is a chemical reaction that releases energy to the surroundings.

Step 2: Analyze each option in the problem to see which best fits the definition of an exergonic reaction:

Step 3: Option (a) describes breaking down large molecules into smaller ones, which often releases energy (catabolic process). This is a common example of an exergonic reaction.

Step 4: Option (b) describes assembling small molecules into larger ones, which usually requires energy input (an endergonic process), so it does not fit the exergonic definition.

Step 5: Option (e) directly states that energy is released during the reaction, which aligns perfectly with the definition of an exergonic reaction.

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주요 개념

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Exergonic Reactions

Exergonic reactions are chemical processes that release energy, usually in the form of heat or light. These reactions have a negative Gibbs free energy change, meaning the products have less energy than the reactants, making the reaction spontaneous.

Catabolic Processes

Catabolic processes involve breaking down large molecules into smaller ones, releasing energy stored in chemical bonds. This breakdown is typical in exergonic reactions, such as cellular respiration, where complex molecules like glucose are decomposed.

Energy Flow in Chemical Reactions

Energy flow refers to how energy is absorbed or released during chemical reactions. In exergonic reactions, energy is released to the surroundings, which can be harnessed to perform cellular work or drive other endergonic reactions.

In an exergonic reaction,(a) Large molecules are broken down into smaller ones.(b) Small molecules are assembled into larger ones.(c) Molecules are rearranged to form new molecules.(d) Molecules move from reactants to products and back.(e) Energy is released during the reaction.