Chemical Reaction Lab Report

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.

This experiment looked at how substrate concentration can affect enzyme activity. In this case the substrate was hydrogen peroxide and the enzyme was catalase. Pieces of meat providing the catalase were added to increasing concentrations of hydrogen peroxide in order to measure the effect of hydrogen peroxide concentrations on the enzyme’s activity. The variable measured was oxygen produced, as water would be too difficult to measure with basic equipment.

Of the many functions of proteins, catalysis is by far the most vital. When catalysis is not present, most reactions in the biological systems take place very slowly to produce at an adequate pace for metabolising organism. The catalysts that take this role are called enzymes. Enzymes are the most efficient catalysts; they can enhance rate of reaction by up to 1020 over uncatalysed reactions. (Campbell et al, 2012).

Purpose: The purpose of this experiment was to observe the many physical and chemical properties of copper as it undergoes a series of chemical reactions. Throughout this process, one would also need to acknowledge that even though the law of conservation of matter/mass suggests that one should expect to recover the same amount of copper as one started with, inevitable sources of error alter the results and produce different outcomes. The possible sources of error that led to a gain or loss in copper are demonstrated in the calculation of percent yield (percent yield= (actual yield/theoretical yield) x 100.

1b. Enzymes are proteins that act as biological catalysts. A catalyst is something that speeds up a reaction without changing its form. Enzymes speed up reactions by lowering the activation energy of a reaction. The activation energy of a

Can hydrogen peroxide be broken down by catalyst other than those found in a living system?

The biological definition of an enzyme is, a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction. Based on research in genetics, it can be concluded that there are around 25,000 enzymes. From these enzymes, only 5,000 have been characterized so there is a great deal still to discover. Organic reactions in the body tend to be very slow, so in order to account for the slowness of these reactions, enzymes are needed to be a catalyst in these reactions to speed up the process. Enzymes are binding proteins. They bind with certain substrates to create products.

If we add HCl to the hydrogen peroxide, then the reaction will be stronger than the control group because the acids are working together.” The data that was collected supported our hypothesis on the water group , because the kPa pressure went from 0 to 108 in sixty seconds. However it did not support our hypothesis on the hydrocloric acid group only went 0 to 102 in sixty seconds. The water group reaction was less extreme because the hydrogen peroxide was diluted, but the hydrochloric acid group was not more extreme because the acids did not work together like we predicted they would. Our data could have been more accurate if pressure was applied to the test tube the second the liver was dropped into the mixture.

In biological reactions, enzymes function as catalysts to speed up the rate of chemical reactions by lowering the activation energy without being consumed.

Enzymes are the catalysts in biological processes. They are large proteins that speed up chemical reactions. The enzyme forms the active site from small numbers of amino acids. The active site is the location on the enzyme where the substrate collides and the reaction takes place.

Enzyme is proteins that speed up and regulate the process of chemical reactions within living organisms. Enzyme helps to reduce reaction rates by breaking bonds between atoms (). Biochemical reactions require energy. The minimum amount of energy is necessary to set atoms be able to undergo chemical reactions is called activation energy (Activation energy, 2015). When reactants absorb energy and reach to the activation energy, reactants combine and produce products.

Enzymes are large protein molecules that act as biological catalysts that aid in chemical reactions that take place in living things. (Raven 44) Catalysts are substances that speed up the rate of chemical reactions by decreasing the amount of energy needed for a chemical reaction to take place. This energy barrier is otherwise known as the activation energy. Enzymes are one of the most crucial facilitators of life in that they speed up reactions that would otherwise occur to slowly to support life. (Perry 103)

The independent variable in this investigation are the temperatures of the hydrogen peroxide solution and liver cube. The temperatures tested are 10°C, 20°C, 30°C, 40°C and 50°C. This allows examination to occur at a range of temperatures.

Enzymes are proteins that act as catalysts within living cells. Catalyst increase the rate at which chemical reactions occur without being consumed or permanently altered themselves. A chemical reaction is a process that converts one or more substances (known as reagents, reactants, or substrates) to another type of substance (the product). As a catalyst, an enzyme can facilitate the same chemical reaction over and over again.

Enzymes are proteins that speed up the rate of a chemical reaction. Almost every chemical reaction in our body requires the use of enzymes. Enzymes work by speeding up the rate of a chemical reaction known as catalysis. Enzymes bind with substrates reducing the activation energy, so the chemical reaction can perform easily.