Recognise the Characteristics of Enzymes and Their Involvement in Physiological Processes

Topics: Enzyme, Digestion, PH Pages: 4 (1258 words) Published: October 25, 2012
All living organism depend on catalytic proteins called enzymes, these compound are responsible for metabolism and biochemical regulation of energy, there are millions of enzymes and hundreds of enzymes have been identified in the human body as well. All living system possess enzymes as vital components of the body, enzymes are found in all organisms. Everyone has a natural pH balance in the body. Enzymes are complex proteins which speed up chemical reactions if this did not happen it would occur to slowly for us to survive. They are involved in breaking down large molecules in to smaller ones or they can build up smaller molecules in to bigger ones. Enzymes speed up chemical reactions but they aren’t changed by the reaction so they can be re-used. ( Enzymes are biological catalysts and they are proteins.

Enzymes in the body help carry out various chemical functions like digestion of food, assist in the process of providing cellular energy, support the brain functions, repairing and healing processes within the body, breaking down toxins, detoxification of blood. The properties of enzymes are that they reduce the amount of energy needed for molecules to react together Two examples of enzymes are:

Digestive Enzymes
Digestive enzymes are secreted by the body that helps in digestion of food. The names of enzymes that help in digestion are: •Amylase: This enzyme helps in breaking down carbohydrates. It is found in saliva, pancreas and intestinal juices. •Proteases: It helps in digestion of proteins. It is present in the stomach, pancreatic and intestinal juices. •Lipases: Lipases assist in digestion of fats. It is seen in the stomach, pancreatic juice and food fats. Amylase I and II are secreted by the salivary glands initially and then by the pancreas. They break the bonds between carbohydrate molecules and produce disaccharides and disaccharides. Amylase I is activated by chewing and convert starch to maltose. Amylase II is secreted...
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