biology enzymes essay

Temperature on Rate of Enzyme Activity of Different Enzymes Abstract/Purpose: The main objective of this experiment was to determine how different factors, such as the type of enzyme and the temperatures that each of the enzymes were exposed to, could affect the rate of enzyme activity. In order to measure this, a potato enzyme and liver enzyme were placed in four different temperatures for 24 hours. Each enzyme was then placed in a test tube with hydrogen peroxide and the rate of enzyme activity was measured

spontaneously. Each reaction step is catalysed, by an enzyme. Enzymes are important for catalysing all types of biological reactions: those that require energy as well as those that release energy. (Metabolic Pathways, 2016) (Metabolic Pathways, 2016) Enzymes are proteins that control the rates of chemical reactions, almost all processes in a biological cell need enzymes in order to occur at a specific rate. (Barnes, Vokins and Barnes, 1998) Enzymes are selective for their substrates and only speed

and measure the enzyme activity of β-galactosidase in the different concentrations of o-Nitrophenylgalactoside (ONPG) using a spectrophotometer. The spectrophotometer was also set at 420nm, a wavelength which is best for recording the absorbance values for the experiment. From the results, 0.9mM ONPG solution has the highest absorbance and 0.1mM ONPG solution has the least. Also, 0.5mM ONPG solution has the highest rate of enzyme activity and it is the most efficient as the enzyme activity of the

by something called Enzymes. Enzymes are basically catalyst that are organic which are made up of hundreds of amino acids and are pertained as fairly large (Biology Department, n.d, p.34). Similar to other catalyst, enzymes have the capability of fulfilling their function without allowing themselves to be consumed as well as disfigured. Enzymes can also carry on their function without changing the chemical equilibrium between reactants and products (Cooper GM, 2000). Enzymes main function is to help

The Effect of Catalase Enzyme Concentration on the Rate of Enzymatic Reaction By Michelle Stehlin 10/15/2016 Biology (BIOL 133) The purpose of this experiment is to determine if an increase in enzyme concentration will initiate an increase in the rate of emyzmatic activity and if

Lab: Enzyme Activity Under Various Environmental Conditions Introduction: The name of the enzyme used in this lab is called peroxidase. “In plants the enzyme is called peroxidase. A related enzyme named catalase performs the same function in animals” (Pearce, 2017). These enzymes breakdown hydrogen peroxide (which is a by – product of metabolism). In this lab “the behaviour and activity of these enzymes” will “be measured by adding enzyme extract to hydrogen peroxide and then monitoring the rate

(Introduction to Enzymes) 2015. Effects of pH (Introduction to Enzymes). [ONLINE] Available at: http://www.worthington-biochem.com/introbiochem/effectsph.html. [Accessed 30 April 2016]. In the article, the Worthington Biochemistry Corporation concisely explain the effects of pH and show what the optimal pH level is for multiple enzymes. The author/s are believed to be using data gained through experiments conducted, to try and identify the region of pH optimal stability for each enzyme. The research

Name of Lab: Properties of Enzymes Date: November 2015 Name of Instructor: Mr. Jeffrey Ellis Subject Section: Biology I/Lab 1500 (DAC) Abstract: In this lab or experiment, the aim was to determine the following factors of enzymes: (1) the effects of enzymes concentration the catalytic rate or the rate of the reaction, (2) the effects of pH on a particular enzyme, an enzyme known and referred throughout this experiment as ALP (alkaline phosphate enzyme) and lastly (3) the effects

Enzymes are biological catalysts that are responsible for the biochemical reactions inside living cells. They are made up of proteins that are synthesised by only living cells and speeds up the rate of reaction by up to a million times (Greenwood, 2011). Temperature, pH levels, substrate and enzyme concentration and inhibitors affects the enzyme action (Rsc.org, 2016). Two theories are used to describe the mechanisms of enzyme activity; the lock and key theory and the induced fit mechanism. The

Chemical reactions take place in all living organism. All Most all chemical reactions require an enzyme. These enzymes act as a catalyst to help regulate the rate of a chemical reaction. Three small lab experiments were performed to find the optimum pH, temperature, and concentration of the enzyme and substrate. The lab used the reaction of Catalase converting H2O2 into H2O and O2. The reaction was measured by the production of oxygen, using quaiacol that turns brown when oxidized. A spectrophotometer