Question

write an essay on enzymes?​

Answer 1

Answer:

Enzymes are globular shaped proteins that are found throughout the body, with their main function being to act as biological catalysts. An enzyme can act to speed up or regulate the rate of the reaction, in order to maintain an efficient rate of biological reactions. Enzymes, whilst having an important role in the reaction of many chemicals within the body, are not consumed in the reaction, and so are able to catalyze many reactions in their life cycle. Enzymes are able to reduce the activation energy of the reaction; the energy required to break bonds between the reactants, and form new bonds in the products, which allows more product to be formed. (Marieb and Hoehn, 2010, pp.51-53).

Unlike with changing the pH or the temperature of the reaction, adding more substrate than what is required to meet the maximum reaction rate will no cause the protein to become denatured. When we plot the enzyme activity vs the substrate concentration, we produce a hyperbolic curve, known as the Michaelis-Menten curve. (Worthington Biochemical Corporation, 2011).

In this series of experiments, we will be investigating the effects of the enzyme alkaline phosphatase. Alkaline phosphatase catalyses the hydrolysis of a range of phosphate esters, in order the release an inorganic phosphate. This enzyme belongs to the hydrolases EC class. (Worthington Biochemical Corporation, 2011).

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Answer 2

Explanation:

Enzymes are an important part of all metabolic reactions in the body. They are catalytic proteins, able to increase the rate of a reaction, without being consumed in the process of doing so (Campbell 96). This allows the enzyme to be used again in another reaction. Enzymes speed up reactions by lowering the activation energy, the energy needed to break the chemical bonds between reactants allowing them to combine with other substances and form products (Campbell 100). In this experiment the enzyme used was acid phosphates (ACP), and the substrate was p-nitrophenyl phosphate.

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