Examples of reactant in the following topics:
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- An arrow is typically drawn between the reactants and products to indicate the direction of the chemical reaction.
- The reactant hydrogen peroxide is broken down into water (H2O), and oxygen, which consists of two bonded oxygen atoms (O2).
- Some chemical reactions, such as the one shown above, can proceed in one direction until the reactants are all used up.
- In reversible reactions, reactants are turned into products, but when the concentration of product goes beyond a certain threshold, some of these products will be converted back into reactants; at this point, the designations of products and reactants are reversed.
- In biological reactions, however, equilibrium is rarely obtained because the concentrations of the reactants or products or both are constantly changing, often with a product of one reaction being a reactant for another.
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- For this reason, reactant molecules don't last long in their transition state, but very quickly proceed to the next steps of the chemical reaction.
- Whether the reaction is exergonic (ΔG<0) or endergonic (ΔG>0) determines whether the products in the diagram will exist at a lower or higher energy state than the reactants.
- For this reason, heating up a system will cause chemical reactants within that system to react more frequently.
- Once reactants have absorbed enough heat energy from their surroundings to reach the transition state, the reaction will proceed.
- In this endergonic reaction, activation energy is still required to transform the reactants A + B into the product C.
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- Enzymes bind with chemical reactants called substrates.
- In some reactions, a single-reactant substrate is broken down into multiple products.
- Two reactants might also enter a reaction, both become modified, and leave the reaction as two products.
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- Many of the substrates, intermediates, and products in a particular pathway are reactants in other pathways.
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- Because the final product of the citric acid cycle is also the first reactant, the cycle runs continuously in the presence of sufficient reactants.
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- In many cellular chemical reactions, enzymes bind to several substrates or reactants to form a temporary intermediate complex that allow the substrates and reactants to more readily react with each other.
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- A negative ∆G also means that the products of the reaction have less free energy than the reactants because they gave off some free energy during the reaction.
- In this case, the products have more free energy than the reactants.
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- Many of the substrates, intermediates, and products in a particular pathway are reactants in other pathways.
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- In reality, the process includes many steps involving intermediate reactants and products.
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- Although the light-independent reactions do not use light as a reactant (and as a result can take place at day or night), they require the products of the light-dependent reactions to function.