How Do Enzymes Affect Activation Energy

Enzymes are known as protein catalysts. The name protein catalyst suggests that most enzymes are made of proteins. A catalyst is a substance that speeds up chemical reactions without being consumed in the process. (Giuseppe, M 2002, p.69). After a reaction has been catalyzed, the catalyst can be used again to catalyze the same reaction. Enzymes reduce the activation energy (minimal energy) it takes for a reaction to take place. Enzymes can either catabolize (destroy), or anabolize (build up) a chemical system.

The diagram above shows the theory that the rate of reaction will continue to climb until all the active sites are being used and the rate will level off but does not stop.

An enzyme is a protein that acts as a catalyst to form reaction, and see the activity of the

8. If an enzyme is present, it also lowers the activation energy needed to get the reaction started.

Enzymes are specific-type proteins that act as a catalyst by lowering the activation energy of a reaction. Each enzyme binds closely to the substrate; this greatly increases the reaction rate of the bounded substrate. Amylase enzyme, just like any other enzyme, has an optimum PH and temperature range in which it is most active, and in which the substrate binds most easily.

Organisms cannot rely entirely on spontaneous reactions to produce all the materials necessary for life. These reactions occur much too slowly. To produce these materials quicker, cells rely on enzymes, biological catalysts, to speed up these reactions without being consumed. (General Biology I, Martineau, Dean, Gilliland, & Soderstrom, Lab Manual, 2017, 43). To produce these materials quicker, the activation reaction much be lowered, a very important part of this lab. Each enzyme acts on a specific molecule, or set of molecules, called a substrate (43). The enzyme binds to this substrate, forming an enzyme-substrate complex. An enzyme is a protein whose structure is determined by the sequence of amino acids groups that

Enzymes are proteins that act as catalysts during a biochemical process. Catalysts are non-changing enzymes that can increase or decrease activation energy to accelerate or slow down a biochemical reaction without using additional energy.

In chemical reactions bonds must be broken and new bonds must be formed. In order for this to occur the bonds must be made less stable. For bonds to become less stable a small input of energy is required and this is

When an enzyme reacts in a metabolic process the activation energy decreases and the reaction takes place faster.

Chemical reactions that absorb energy are called endothermic reactions, these reactions are observed by a decrease in temperature of the reaction mixture.

Activation energy is the energy, which needs to be supplied before a reaction can occur, basically the

A chemical reaction requires that bonds in the reactants be broken. The initial energy that must be absorbed in order to break the bonds of the reactant molecule is called the energy of activation. Enzymes work by lowering the energy of activation. For example,

An enzyme is a catalyst. Catalysts are known for speeding up the rate of reactions by lowering the activation energy of the biochemical reaction. (Reece et al., 2011)

Enzymes are proteins that act as catalysts and help reactions take place. In short, enzymes reduce the energy needed for a reaction to take place, permitting a reaction to take place more easily. Some enzymes are shape specific and reduce the energy for certain reactions. Enzymes have unique folds of the amino acid chain which result in specifically shaped active sites (Frankova Fry 2013). When substrates fit in the active site of an enzyme, then it is able to catalyze the reaction. Enzyme activity is affected by the concentrations of the enzymes and substrate present (Worthington 2010). As the incidence of enzyme increases, the rate of reaction increases. Additionally, as the incidence of substrate increases so does the rate of reaction.

Through chemical reactions in the body, substrates must reach a higher energy state for the reaction to proceed. This energy state is called the transition state and the energy needed for the substrate to reach the transition state is called activation energy (Cooper, 2000). Therefore, enzymes ultimately lower the activation energy needed thereby catalyzing the rate of reaction (Cooper, 2000).