The activation energy is the minimum amount of energy needed to start a chemical reaction.. A. An example of activation energy is when you boil water. The activation energy used to boil water is heat from the stove.
http://8th-grade-physical-science.wikispaces.com/CHEMICAL+REACTIONS+-+Controlling+Chemical+Reactions
1 If you give more of the reactant to the chemical reaction, the speed of it will increase, and vice versa. 2  By adding the reactant material it speeds up the reaction without being consumed. 3  Adding a material that stops chemical reactions slows it down.
http://8th-grade-physical-science.wikispaces.com/CHEMICAL+REACTIONS+-+Controlling+Chemical+Reactions
If the enzyme concentration is increased the reaction rate is also increased because there are more active sites for the substrate to attach. Eventually the reaction rate reaches a maximum because all of the substrate is saturated with enzyme and there is no more substrate available. •.
https://quizlet.com/3545903/enzymes-flash-cards/
An endothermic reaction is a chemical reaction where the energy content of the products is more than that of the reactants; heat is taken in by the system.. (matter.org.uk) this means that the amount of energy one substance increases after the chemical reaction occurs. A. How to Control Chemical Reactions.
http://8th-grade-physical-science.wikispaces.com/CHEMICAL+REACTIONS+-+Controlling+Chemical+Reactions
Enzymes allow many chemical reactions to occur within the homeostasis constraints of a living system. Enzymes function as organic catalysts. A catalyst is a chemical involved in, but not changed by, a chemical reaction. Many enzymes function by lowering the activation energy of reactions. By bringing the reactants closer together, chemical bonds may be weakened and reactions will proceed faster than without the catalyst. The use of enzymes can lower the activation energy of a reaction (Ea).
http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookEnzym.html
A material that slows down a chemical reaction is called an inhibitor. Inhibitors are, in a way, the exact opposite of a catalyst. Were a catalyst is something that speeds up a chemical reaction, an inhibitor is a substance that slows or stops a chemical reaction. Enzymes. At last, we will discuss enzymes and why they are relevant to this topic: controlling chemical reactions.
http://8th-grade-physical-science.wikispaces.com/CHEMICAL+REACTIONS+-+Controlling+Chemical+Reactions
If the substrate concentration is increased, the reaction rate is also increased because there are more substrates to which the enzymes can attach. Eventually the reaction rate reaches a maximum because the enzyme is saturated and their are no more available.
https://quizlet.com/3545903/enzymes-flash-cards/
Reactions that require energy to initiate the reaction are known as endergonic reactions. All natural processes tend to proceed in such a direction that the disorder or randomness of the universe increases (the second law of thermodynamics).
http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookEnzym.html
1. Antibiotics can be used by inhibiting the enzymes in disease causing bacteria. 2. Using feedback inhibition to prevent metabolic reaction pathways from running out of control.
https://quizlet.com/3545903/enzymes-flash-cards/
Temperature: Increases in temperature will speed up the rate of nonenzyme mediated reactions, and so temperature increase speeds up enzyme mediated reactions, but only to a point. When heated too much, enzymes (since they are proteins dependent on their shape) become denatured.
http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookEnzym.html
what controls chemical reaction in body
Enzymes control chemical reaction in the body. Enzymes that controls chemical reaction in body.