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What is usually true about reactions with high activation energies?
Wiki User
∙ 14y ago
They happen much slower.
Wiki User
∙ 14y ago
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Why do biological reactions have a high activation energy and Why?
Because ATP
Energy of activation is?
The energy need to activate something depends on what is being activated. These energies can range from high to low.
What are slowed reactions?
Chemical reactions that have high activation energy, with multiple intermediates and transitions states that have higher activation energy than the initial requirement, but which still have a negative Gibbs free energy change.
Is the activation energy for chemical reactions in living things high or low?
Activation energy of reaction is the same regardless if it is in living organism or in test tube. Yet, the energy of activation can be lowered if catalyst is present. In living things catalyst lower the energy needed for chemical reactions.
How does enzymes speed up chemical reactions in your body?
Reactions in the body need a certain amount of energy, called activation energy. Most reactions don't take place because this activation energy is too high. The enzyme bonds to the molecule which diminguishes the activation energy, so the reaction can take place. These enzymes de-bond from the new formed molecule afterwards.
The activation energy for the chemical reaction in living thing is high or low?
It is high because the enzymes in cells speed up the reactions by lowering the energy.
What is the role of activation energy in inorganic chemistry?
Activation energy is needed to trigger some non-organic chemical reactions, For example the use of a blasting cap to detonate high explosives.
What is the difference between the reaction with an enzyme and the reaction without an enzyme?
Very high activation energy is needed in enzymelss reactions
How do enzymes speed up chemicle reactions?
They lower the activation energy in huge amound.Enzymes can increase the rate of reaction as high as 10000 times.
Why are enzymes necessary for anabolic reaction to occur in living organisms?
Enzymes allow many chemical reactions to occur. They catalyze reactions by lowering the activation energy, which is the amount of energy needed to trigger a chemical reaction. Whereas heat can provide energy to trigger reactions, temperatures needed to reach activation energy for most metabolic reactions are often too high to allow cells to survive, so enzymes are in fact needed if metabolism (anabolic or catabolic) is to occur.
What type of chemical reactions will not occur without a source of energy?
The answer the question is probably looking for is "endothermic reactions", though that's not necessarily 100% accurate. Some exothermic reactions have very high activation energies and will not proceed in the absence of a catalyst without an initial source of energy (though, once started, the reaction itself may provide enough energy to keep it going). Also, technically, "endothermic" refers specifically to heat or thermal energy. For energy generally we should use the term "endergonic" instead, though that's a less common term.
Why is the activation energy of an endothermic reaction is at least as large as its enthalpy?
In an endothermic reaction the energy of the products is higher than the energy of the reactants. The activation energy also is an energy increase. The activation energy must be at least as high as the products energy or the reaction would never take place. Thus, the activation energy must be at least as large as the enthalpy in an endothermic reaction.
