Biological Reactions Of Chemical Reactions Essay

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.

Enzymes are biological catalysts, which speed up the rate of reaction without being used up during the reaction, which take place in living organisms. They do this by lowering the activation energy. The activation energy is the energy needed to start the reaction.

Enzymes are biological catalysts, which accelerate the speed of chemical reactions in the body without being used up or changed in the process. Animals and plants contain enzymes which help break down fats, carbohydrates and proteins into smaller molecules the cells can use to get energy and carry out the processes that allow the plant or animal to survive. Without enzymes, most physiological processes would not take place. Hundreds of different types of enzymes are present in plant and animal cells and each is very specific in its function.

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.

Enzymes are proteins that act as catalysts for reactions. This simply means that enzymes lower the activation energy required for a reaction to take place, allowing a particular reaction to take place much quicker and easier. Specific enzymes only lower the activation energy for specific reactions, and enzymes are shape-specific. The unique folds of the amino

3. Cells use enzymes as biological catalysts to increase or accelerate the rate of reactions, such as those in photosynthesis or glycolysis. This allows reactions to occur under conditions that sustain life.

Enzymes are a key aspect in our everyday life and are a key to sustaining life. They are biological catalysts that help speed up the rate of reactions. They do this by lowering the activation energy of chemical reactions (Biology Department, 2011).

Enzymes are proteins that catalyze (speed up) biological reactions in an organism by lowering the activation energy of a reaction. They do this by either straining the bonds in a molecule so that is easier to break up or by placing separate molecules/elements close to each other so that bonds are formed. Enzyme activity is influenced by an array of different factors such as enzyme concentration, substrate concentration, temperature, pH and inhibitor concentration. All of these affect the rate of reactions of enzymes and some such as temperature, inhibitors and pH can under circumstances cause enzymes to become permanently affected. Catalase is an enzyme found in almost all organisms on earth exposed to Oxygen.

Introduction: Enzymes are essential protein molecules that are used by living organisms to survive (Appleby 2014). They perform chemical reactions with such efficiency that life in the cell is sustainable (Appleby 2014). Without the specialized function to speed up chemical reactions quickly, cells would not be able to live. Also, enzymes do get used up after catalyzation. Every enzyme has a spot on its surface called the active site (Appleby 2014).

Enzymes act as catalysts because some chemical reactions that make life possible are either too slow or require activation energies. For a chemical reaction to take place, the enzymes have to bind with substrates to create the enzyme-substrate complex. The substrate binds to the enzyme at the active site, reducing the energy needed for the reaction. The enzyme-substrate complex is evidence itself of a chemical reaction (Miller & Levine 50-51). According to the Lock and Key Theory, only certain substrates can fit the enzyme’s active site.

The amount of energy needed to reach the energy threshold of a chemical reaction is called the activation energy. In the last example, heat is used as the catalyst to carry water over the activation energy needed to boil. However, heat cannot be the only factor that facilitates chemical reactions because it is

When chemical reactions occur in the cell, enzymes, which are proteins, help catalyze the reaction (Schultz, D. L, 2005). Due to the fact that all enzymes are proteins, the folding pattern affects how the enzyme functions and if there is not proper folding then the enzyme cannot bind to substrates (Schultz, D. L, 2005). If there were no enzymes in cells, then the process of reactions would happen slowly. As said in Worthington Biochem, without enzymes, these reactions take place at a rate far too slow for the pace of metabolism. The reason why enzymes catalyze chemical reactions is due to the fact that enzymes lower the activation energy in the cell(Schultz, D. L, 2005). Activation energy is the amount of energy needed in a reaction.

reaction, the activation energy is the minimum energy that is needed to break certain bonds of the

“Enzymes are catalysts that speed up chemical reactions without being used up in the process” (Leady). A catalyst helps speed up a chemical reaction without being changed during the reaction. Enzymes are specific meaning that they can work with only a specific set of chemical reactions. Most enzyme names end in -ase. The shape of a protein is very important in its function for the reaction. The molecule the enzyme works on is called a substrate. In order for this enzyme to work on this reaction the substrate must first fit into an activation site. When an enzyme binds to its substrate, it is called an enzyme-substrate complex. The resulting chemicals from the reaction are called the products. Enzymes can be affected by a few variables such as pH and temperature. “All enzymes work best at a specific temperature in the reaction to work. About an average human, enzymes work greatly at 98.6 Fahrenheit or 37.5 Celsius”(Effect). The lower the temperatures are the slower the enzyme works. At low temperatures, the enzyme does not work as well because there is not enough movement between the molecules to have the substrate, and the enzyme meets and binds together. The higher temperatures can cause a denature of an enzyme. This means that enzyme shape is changing making the enzyme inactive. “The reason is that enzymes are proteins that are made up of amino acids and at high temperatures the hydrogen bonds break which then uncoils the protein and stops its function”(Enzymes). In

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.