An enzyme increases the rate of the reaction by lowering the activation energy needed for the reaction. The secret is that enzymes weaken the bonds in the substrate so that products are formed much faster.
Enzymes are catalysts or substances that speed up the reaction (without being consumed in it). An enzyme increases the rate of reaction by lowering the energy of activation or (Ea). Enzymes achieve that by attaching to the substrate in the active site and forming an enzyme substrate complex in which the enzyme disturbs the covalent bond of the substrate. This causes it to enter the transitional state, which is the most energetic and unstable state. The enzyme then breaks apart, and the substrate goes into an exorganic reaction to form the product.
No, you've got it backwards. Activation energy is the amount of energy needed to make a reaction happen, so if you increased activation energy the reaction would happen slower. Enzymes decrease activation energy to speed up a reaction. (There are also inhibitory enzymes which do the opposite.)
Yes, they do this without undergoing any permanent chemical changes themselves
All catalysts, enzyme work via the lowering of the activation energy for a reaction this causes the rate of the reaction to increase dramatically. Should be noted that most enzyme with tight binding reactions rates are millions of times faster than those of of catalyst similar reactions. causing rapid catalysis
increased temperature
Increase in Surface area,Increase in temperature,Increase in concentration,and the presence of catalysts or inhibitors.
In biological chemical reactions, examples of these are called enzyme inhibitors. Enzymes speed up reactions, but enzyme inhibitors slow them down. This can be by either competing with the reactants for a spot on the enzyme, or by altering the enzyme's structure so that it does not speed up reactions anymore. In either case, enzyme inhibitors slow down chemical reactions.
Enzymes are metabolism controlling agent. Enzymes act as a catalyst to increase the efficiency of chemical reactions without being use up of themselves.Enzymes are made up of Proteins.Without participation of enzymes reaction will proceed slowly and making life impossible.
an enzyme is a protein that catalyzes (increases the rates of) reactions by lowering the activation energy required for the reaction. enzymes catalyze all kinds of reactions, including endergonic reactions.
Catalyst
This varies per enzyme and what it catalyzes but chemical reactions that result in an increase in temperature often speed up enzyme catalysis.
Enzymes are a type of protein found in the body which initiate and increase the reaction rates of chemical reactions in the body. For example: DNA replication occurs due to the enzyme Polymerase RNA.
Enzymes are proteins that catalyze (i.e., increase the rates of) chemical reactions, Coenzymes are small organic molecules that transport chemical group. Inhibitors are activators or molecules that increase or decrease enzyme activity. Apoenzyme is a protein component of an enzyme, to which the coenzyme attaches to form an active enzyme where as holoenzyme is an active, complex enzyme consisting of an apoenzyme and a coenzyme.
All catalysts, enzyme work via the lowering of the activation energy for a reaction this causes the rate of the reaction to increase dramatically. Should be noted that most enzyme with tight binding reactions rates are millions of times faster than those of of catalyst similar reactions. causing rapid catalysis
true they decrease the rates of chemical reactions this i right not the other dudes awnser:P
increased temperature
** TEMPERATURE ** pH LEVEL ** PARTICLE SIZE ** SUBSTRATE CONCENTRATION
Increase in Surface area,Increase in temperature,Increase in concentration,and the presence of catalysts or inhibitors.
by lowering the activation energy of reactions
Temperature (rate increases with temp increase) Pressure (rate again increases with press increase) Concentration (rate increases with concentration increase) Particle size (rate increases with smaller particles) Catalyst increases rate.