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Is melting endothermic or exothermic?

Asked by Ana Robles

Carla McCrory

Carla McCrory
BA, Contributor

Because the substance is melting, the process is endothermic, so the energy change will have a positive sign.

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Why is photosynthesis considered an endergonic reaction quizlet?

The photosynthetic reaction is considered an endergonic reaction. In cells, endergonic reactions are often coupled with exergonic reactions that store energy. Why is photosynthesis considered an endergonic reaction? Low-energy reactants are converted to high-energy products.

Is photosynthesis is a catabolic process?

Photosynthesis, which builds sugars out of smaller molecules, is a "building up," or anabolic, pathway. In contrast, cellular respiration breaks sugar down into smaller molecules and is a "breaking down," or catabolic, pathway.

Is endergonic the same as endothermic?

Re: Exothermic vs Exergonic and Endothermic vs Endergonic

Exo/Endothermic represents the relative change in heat/enthalpy in a system, whereas Exer/Endergonic refers to the relative change in the free energy of a system.

How is photosynthesis endergonic?

Is Photosynthesis Endergonic? Photosynthesis is termed an endergonic reaction because it requires an input of energy in order to proceed. ... Without this energy, there would be no way for carbon dioxide, a small, simple molecule, to be converted to glucose, a considerably larger and more complex molecule.

Is freezing Exergonic?

The freezing of water is an exothermic process.

Is photosynthesis overall exergonic?

Photosynthesis is an endergonic (energy-consuming) process. Cellular respiration is an exergonic (energy-releasing) process.

Why is photosynthesis considered an anabolic endergonic reaction?

Why is photosynthesis considered to be an anabolic endergonic process? Because through the use of CO2 H2O and making it into glucose (more complex molecule). ... The photons are processed and through endergonic reactions and the ETC converted to usable energy to power photosynthesis.

How do endergonic reactions occur?

Endergonic reactions can be achieved if they are either pulled or pushed by an exergonic (stability increasing, negative change in free energy) process. Of course, in all cases the net reaction of the total system (the reaction under study plus the puller or pusher reaction) is exergonic.

Is photosynthesis a spontaneous process?

Photosynthesis in its entirety is an anabolic, nonspontaneous (endergonic) process driven by energy captured from sunlight.

Why do you think photosynthesis classified as an endergonic reaction?

Photosynthesis is an endergonic reaction because it cannot begin until the plant has absorbed light energy.

Which type of reaction is photosynthesis?

Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.

Is photosynthesis a physicochemical process?

Photosynthesis can be defined as the physicochemical process by which photosynthetic organisms use light energy to drive the synthesis of organic compounds. The photosynthetic process depends on a set of complex protein molecules that are located in and around a highly organized membrane.

Is photosynthesis an endergonic process?

Photosynthesis is an endergonic process. Photosynthesis takes in energy and uses it to build carbon compounds.

What is an example of endergonic reaction?

One of the most common examples of an endergonic reaction is the process of photosynthesis. Photosynthesis is used by all plants to convert light energy into a form of chemical energy that can be used to fuel their life processes. Photosynthesis doesn't happen spontaneously.

What is a photosynthesis example?

An example of photosynthesis is how plants convert sugar and energy from water, air and sunlight into energy to grow. ... The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and a source of hydrogen (usually water), using light as an energy source.

Is photosynthesis possible at night Why?

Answer: No , photosynthesis is not possible at night because plant uses their stored energy for themselves for respiration which was formed during the. pticess of photosynthesis..

Is photosynthesis oxidation or reduction?

Photosynthesis involves oxidation and reduction by oxidizing the oxygen in water and reducing the carbon in carbon dioxide.

Is photosynthesis endergonic and anabolic?

Photosynthesis, which uses the energy of sunlight to create sugars, is an endergonic reaction. ... In general, metabolic reactions that involve creating chemical bonds are called "anabolic" reactions. Metabolic reactions that involve breaking bonds to release energy are called "catabolic."

What is Delta G in biology?

Every chemical reaction involves a change in free energy, called delta G (?G). The change in free energy can be calculated for any system that undergoes such a change, such as a chemical reaction. To calculate ?G, subtract the amount of energy lost to entropy (denoted as ?S) from the total energy change of the system.

Why is photosynthesis not Exergonic?

While some might think that photosynthesis is an exergonic reaction, it is not. Endergonic reactions create new chemical bonds (anabolic reactions), which store that energy until the bonds are eventually broken. Reactions that break bonds to instead release energy are catabolic reactions.

Is photosynthesis a single replacement?

Photosynthesis is a single displacement reaction.

What are the 5 steps of photosynthesis?

Terms in this set (7)

  • Step 1-Light Dependent. CO2 and H2O enter the leaf.
  • Step 2- Light Dependent. Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2.
  • Step 3- Light Dependent. The electrons move down to enzymes.
  • Step 4-Light Dependent. ...
  • Step 5-Light independent. ...
  • Step 6-Light independent. ...
  • calvin cycle.

What is Endergonic vs Exergonic?

In the exergonic reaction, the reactants are at a higher free energy level than the products (reaction goes energetically downhill). In the endergonic reaction reaction, the reactants are at a lower free energy level than the products (reaction goes energetically uphill).

What is the process of photosynthesis?

During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.