which of the following is an exergonic reaction? course hero

Which process manages the increase of entropy in an organism?

B) Metabolism manages the increase of entropy in an organism.

Why do cells require constant energy?

D) Cells require a constant input of energy to maintain their high level of organization.

What happens to the entropy of an organism as it grows?

Living organisms increase in complexity as they grow, resulting in a decrease in the entropy of an organism. How does this relate to the second law of thermodynamics?

Which has less potential energy, reaction or reaction?

reaction releases heat products have less potential energy than reactions

What happens to the products of a chemical reaction?

products of a chemical reaction become less ordered than the reactant molecules

What increases the entropy of the universe?

Every energy transfer or transformation increases the entropy of the universe

Why do exergonic reactions occur spontaneously?

Because this type of reaction releases energy rather than consuming it, it can occur spontaneously , without being forced by outside factors. In chemistry terms, exergonic reactions are reactions where the change in free energy is negative. Free energy measures the total amount of energy available in a system; negative changes mean ...

How does exergonic energy move?

This is done by breaking the chemical bonds in the sugar or fat, and passing its energy in the form of electrons or another currency to a new molecule.

What is the process of putting energy into chemical bonds?

In these constructive reactions where complex molecules are created, the organism uses energy harvested from photosynthesis or cellular respiration and puts that energy into chemical bonds. These creative parts of metabolism are called “ anabolism .”.

How many molecules of ATP are produced in cellular respiration?

The highly efficient process of cellular respiration uses electron transport chains and other highly specialized chemical equipment to create a shocking 38 molecules of ATP from a single glucose molecule (although six molecules of ATP are consumed in the process, for a net gain of 32).

What is the name of the process where a molecule of glucose is split into two molecules of pyruv?

The term “glycolysis” comes from the roots words “glyco” for sugar and “lysis” for “to split.”. It literally means “splitting sugar” – and that is exactly what happens in glycolysis, where a molecule of glucose is split into two molecules of pyruvate.

How do enzymes work in exergonic reactions?

The enzymes work by bringing the substrate molecule (such as a fat or sugar to be metabolized) into an ideal arrangement for the reaction to begin. This lowers the activation energy of the ...

What is the process of converting sugar into ATP?

Glycolysis is the first process used by prokaryotes and eukaryotes alike to turn energy stored in sugar into ATP. For eukaryotes, glycolysis is only the first step in a process that leads to cellular respiration; for prokaryotes, glycolysis may be the only means they have of obtaining ATP from glucose.

What is an Exergonic Reaction?

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction.

Exergonic Reactions

Exergonic Reactions are spontaneous reaction. For a reaction to be spontaneous the change in Gibbs free energy, ∆G should be negative. At constant temperature and pressure, ∆G= ∆H - T∆S where ∆H is the enthalpy change of the reaction, T is the temperature of the reaction and ∆S is the entropy change of the reaction.

Kinetics

For an exergonic reaction, the equilibrium constant, K eq is greater than 1, i.e. the concentration of products is greater than the concentration of reactants at equilibrium.

Coupling Reactions

Exergonic reactions give/release Gibbs free energy which can be used as work energy by other reactions. This could be explained by an example of pair of weights joined by a rope with a pulley as given in the below mentioned diagram: when the heavier weight falls down, the lighter weight pulls up.

How Else Do Endergonic and Exergonic Relate to Each Other?

Endergonic reactions and exergonic reactions are sometimes also referred as reversible reactions because the quantity of the free energy released or absorbed is the same for both reactions, where endergonic reaction absorbs energy and exergonic reaction releases the energy.

Common Mistakes

Do not confuse exergonic reactions with exothermic reactions. The former releases energy in various forms while the latter releases energy only in the form of heat. Exothermic is one type of exergonic reaction.

Context and Applications

This topic is significant in the professional exams for both undergraduate and graduate courses, especially for