Investigating the effects of changing temperature on the activity of enzymes Background information: Renin is an enzyme that catalyses the coagulation of milk. It is found in the stomach of many animals and is used in making cheeses and junkets. It is found in the gastric juices or gastric mucosa of many mammals‚ including humans. In the human stomach‚ particularly those of infants‚ rennin works to curdle milk so that pepsin‚ another stomach enzyme‚ can further breakdown the proteins into absorbable
Premium Milk Cheese Enzyme
was to find how certain factors of a chemical reaction affect the rate of reaction. This experiment focused on how temperature affects the rate of reaction for the reaction of alka-seltzer and water. The rate of a reaction is a value calculated to figure out how fast a chemical reaction occurs. There are three factors that can be changed that will affect the rate of a chemical reaction: surface area‚ concentration‚ and temperature. Temperature specifically affects the rate of a chemical reaction
Premium Chemical reaction Chemistry Reaction rate
Chemical reactions can happen slowly or fast. The speed of the reaction rate can be changed. Some of the factors that can affect the reaction rate are surface area‚ temperature‚ and concentration and pressure. Surface area is the exposed‚ outer layer of a solid. Increased surface area increases reaction rate because more particles on the surface of a solid come in contact with the particles of another substance. For example‚ if you place a donut stick into water‚ the donut will react slowly with
Premium Chemical reaction Chemistry Reaction rate
calculate the fraction that will be used up after 6.0 minutes. 4. [15 points] The rate law for the decomposition of ozone to molecular oxygen 3 O3 (g) −→ 3 O2 (g) is rate = k [O3 ]2 . [O2 ] The mechanism for this process is k1 O3 O + O2 k−1 k 2 O + O3 −→ 2 O2 Derive a rate law from these elementary steps. Clearly state the assumptions you use in the derivation. Explain why the rate decreases with increasing O2 concentration. 5. [15 points] Consider the following
Premium Acid dissociation constant Enzyme inhibitor Chemical kinetics
Conclusion: The hot trial produced the most oxygen of all three trials. Heat tends to increase the rate of chemical reactions‚ explained in the article Temperature Effects (Introduction to Enzymes) by Chris Jamison. “Like most chemical reactions‚ the rate of an enzyme-catalyzed reaction increases as the temperature is raised. A ten degree rise in temperature will increase the activity of most enzymes by 50 to 100% . Variations in reaction temperature as small as 1 or 2 degrees
Premium Chemical reaction Oxygen Enzyme
changes in colour and texture‚ and a decrease in nutritional value. Furthermore‚ residual enzyme activity and microbial activity in dried foods are essential parameters that effect product quality and shelf life. The quality of dried foods is dependent in part on changes occurring during processing and storage. Some of these changes involve modification of the physical structure. These modifications affect texture‚ rehydrability and appearance. Other changes are due to chemical reactions‚ but these
Premium Food Milk Chemical reaction
HOW INTEREST RATES AFFECT OUR PURCHASING DECISIONS Fluctuating interest rates have a decidedly large impact on purchasing decisions. Higher interest rates mean that consumers don’t have as much disposable income and must cut back on spending. When higher interest rates are coupled with increased lending‚ banks makes fewer loans. Lower interest rates make it easier for farmers and manufacturers to borrow to invest in equipment and buildings. That gives business more incentive to invest
Premium Inflation Monetary policy
concentration on the activity of the enzyme catalase The aim of this experiment is to examine how the concentration of a substrate (hydrogen peroxide) affects the rate of reaction of an enzyme catalyse (found in liver cells) Research Question: how does changing the concentration of the substrate affect the rate of reaction of the enzyme catalyse? Hypothesis: As the concentration of the substrate increases‚ so does the rate of reaction until the reaction reaches a maximum rate. Also‚ as the concentration
Premium Enzyme Oxygen Catalysis
Three Month Treasury Bills and The Variables That Affect the Rates Abstract This paper attempts to create two models that can predict fluctuations in three-month US Treasury Bill yields. Using both simple and multiple regression analysis‚ we analyze the independent variables traditionally associated with risk free U.S. money market interest rates including the Consumer Price Index‚ the Industrial Production Index‚ and the Unemployment rate over two periods‚ July 1990-March 2001 and March 2001-December
Premium Inflation Regression analysis Unemployment
Molecular Biology CTW: Enzyme Kinetic Dr. Cruz 07/22/2010 Enzyme kinetics Introduction Enzymes are biological catalysts or assistants‚ without enzyme many of important processes of life could not happen. Most of enzymes are proteins that help speed up chemical reactions by lowering amount of activation energy needed for the reaction1. Enzymes are usually highly selective‚ only bind to specific substrate and convert it to product at a particular rate1. The rate of the reaction affects by substrate concentration:
Premium Enzyme Chemical reaction Catalysis