Enzymes Lab Report

Enzymes are molecules that accelerate the rate of a reaction through the lowering of the activation energy necessary to perform the reaction without their presence. Depending on the environment that the enzyme is in, determines how efficient the enzyme will be in accelerating the reaction. Factors such as pH and temperature play a role on the enzyme’s efficiency and overall success of the reaction. For example, having a high temperature can break apart non-covalent interactions within proteins—the most common form of an enzyme. The breaking down of these bonds would result in the enzyme having a conformational change that does not allow the substrate to fit into its active site. In our experiment, we used the enzyme cellobiase in order to study

In the experiment we used Turnip, Hydrogen Peroxide, Distilled Water, and Guaiacol as my substances. On the first activity, Effect of Enzyme concentration of Reaction Rate for low enzyme concentration, we tested three concentrations of the turnip extract, and hydrogen peroxide. For the Turnip Extract I used 0.5 ml, 1.0 ml, and 2.0 ml. For hydrogen peroxide we used 0.1 ml, 0.2 ml, and 0.4 ml. We used a control to see the standard, and used a control for each enzyme concentration used. The control contains turnip extract and the color reagent, Guaiacol. We prepared my substrate tubes separately from the enzyme tubes. My substrate tube

Temperature controls the speed the enzymes work at. Higher temperatures increase the kinetic energy which increases the chance of collision therefore speeding up the rate of

Enzymes are catalysts that function to speed up reactions; for example, the enzyme sucrose speeds up the hydrolysis of sucrose, which breaks down into glucose and fructose. They speed up reactions but are not consumed by the reaction that is taking place. The most important of the enzyme is the shape as it determines which type of reaction the enzyme speeds up. Enzymes work by passing/lowering and energy barrier and in doing so; they need to bind to substrates via the active. Once they do, the reaction speeds up so much more quickly than it would without the enzyme. Coenzymes and cofactors aid the enzyme when it comes to binding with the substrate. They change the shape of the active site so the substrate can bind properly and perform its function.

2. We measured 1 mL of turnip peroxidase (the enzyme) and 3 mL of neutral buffer (pH corresponding to the test tube number i.e. pH 5 in test tube 5) with a syringe and disposed it into tubes 3, 5, 6, 7, 8, and 10

Enzymes are a very important to the biological process. Enzymes help break down food and are essential in helping convert that food to energy. Enzymes have a single function, which makes them unique and need specific conditions in order for the reaction to occur. Every function in an organism has its own unique enzyme (What are enzymes?). One important thing to know about enzymes is that they are proteins. According to rsc.org enzymes are efficient catalysts for biochemical reactions and they, “speed up reactions by providing an alternative reaction pathway of lower activation energy” (Enzymes).

On the biochemical level, enzymes work at precise temperatures and pH levels. When the temperature goes up, enzyme activity speeds up. When temperatures decrease, enzyme activity slows down. If an enzyme is at too high of a temperature, it stops functioning. Stomach enzymes function in a more

In part II of the lab six small glass tubes were obtained in a test tube rack. Ten drops of distilled water were then added to test tube 1, five drops to tubes 2-4, and no drops in tubes 5 and 6. Five drops of 0.1M HCl were added to test tube 5 and five drops of 0.1M NaOH to test tube 6. Five drops of enzyme were then added to all tubes except tube 1. Tube 3 was then placed in the ice bucket and tube 4 was placed in the hot bucket at 80-900C for five minutes, the remaining tubes were left in the test tube rack. After the five minutes five drops of 1% starch was added to every tube and left to sit for ten minutes. After ten minutes five drops of DNSA were then added to all the tubes. All the tubes were then taken and placed in the

Enzymes function best when they are set at a specific temperature.

Enzymes are proteins that either speed up a chemical reaction without being used in a process in other words it is also catalyze (Jacklet 1998). They have different regions on its surface called an active site where it can recognize one or more molecules (Jacklet 1998). Enzymes are the main reason for living cells chemical reactions to stay alive (Jacklet 1998). Substrate chemically attracts the active site to bind and form short lived partnership the enzyme substrate complex (Jacklet 1998). When the reaction has occurred the substrate has

1st step is to label 3 test tubes A,B,C. 2 step is to put 3 mL of homogenate into test tube A and place in ice water for 30 minutes. 3rd step is to put 3 mL of homogenate into test tube B and set it at room temperature. 4th step is to put 3 mL of homogenate into test C and place in hot bath water. After, add hydrogen peroxide to each test tube and observe what

ABSTRACT: Enzymes are biological catalysts, and responsible for most of the chemical reactions taking place in living organisms. Enzymes speed up a chemical reaction and are not consumed during the experiment. Three experiments were performed during this lab. Experiments were performed to examine the specificity of an enzyme, effect of temperature on enzyme, and the effect of an inhibitor on an enzyme. First experiment was to demonstrate the specificity of an enzyme.

This was a very interesting and complicated lesson for me. I have reread it over and over again and researched it on various different websites to try and get it to sink in visually in my mind. Enzymes are proteins that allow certain chemical reactions to take place much quicker than the reactions would occur on their own. Enzymes function as catalysts, which mean that they speed up the rate at which metabolic processes and reactions occur in living organisms.

Organisms cannot depend solely on spontaneous reactions for the production of materials because they occur slowly and are not responsive to the organism's needs (Martineau, Dean, et al, Laboratory Manual, 43). In order to speed up the reaction process, cells use enzymes as biological catalysts. Enzymes are able to speed up the reaction through lowering activation energy. Additionally, enzymes facilitate reactions without being consumed (manual,43). Each enzyme acts on a specific molecule or set of molecules referred to as the enzyme's substrate and the results of this reaction are called products (manual 43). As a result, enzymes promote a reaction so that substrates are converted into products on a faster pace (manual 43). Most enzymes are proteins whose structure is determined by its sequence of its amino acids. Enzymes are designed to function the best under physiological conditions of PH and temperature. Any change of these variables that change the conformation of the enzyme will destroy or enhance enzyme activity(manual, 43).

The purpose of this experiment was to test the effects that temperature, pH, and substrate