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Investigating factors affecting rate of reaction
Factors that affect the rate of reaction
Investigating factors affecting rate of reaction
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Varying Concentration of Rennin and Its Effect on the Goagulation Time of Milk
Scientific Knowledge
Enzymes
Enzymes are large molecules, which are protein in nature. They are
biological catalysts that speed up chemical reactions in the body.
They operate by a "lock and key" method. The Enzyme has a certain
"lock" (active site) that only a specified substrates "key" will fit
into.
Enzyme action
Rennin
A proteolytic enzyme that speeds up the coagulation of milk. It is
usually found in the tissues of a calves fourth stomach. Its purpose
is to coagulate the milk in young animals so that the proteins have
time to be extracted, rather than flowing straight through the
digestive system. This particular enzyme catalyses the conversion of
the protein in milk (caseinogen) into paracasein. This forms a thick
curd in the stomach meaning the milk can be exposed to Rennin for a
greater period of time.
Milk
Milk is an almost complete food. It consists of proteins (mainly
casein), salts, fat and milk sugar, or lactose. It also contains
vitamins A, C, D, certain B vitamins, and small amounts of others.
Factors That May Affect The Reaction
Ø The concentration of Rennin
Ø The concentration of Milk
Ø The volume of Rennin
Ø The volume of Milk
Ø The temperature of the reaction
Ø Agitation
The factor I have chosen to explore is the concentration of Rennin
because I believe that varying the temperature of the reaction is very
hard to control and therefore may be inaccurate and agitation is a
very simple investigation. I have a prediction for the investigation
concerning the concentration of Rennin, another reason I chose this
factor.
Prediction
I predict that as the concentration of rennin increases the rate of
reaction will increase. I believe this to be true because if there are
an increased number of enzymes, more milk particles will be broken up
at any one time into the substance, which coagulates the milk,
The Shipping Manager’s activities required a different approach. He used coordination through formal hierarchy. The Shipping Manager assigned the Team Leader tasks that required more supervision and resources. He gave an order to the Team Leader who divided it among his Pullers. The Pullers would enter the tunnel, assemble the order from the various coolers and send it down the track to the awaiting loaders. The Loaders would remove their assigned color-coded stacks and put them in the appropriate trucks for delivery. This process did not require special training but it did require more direction from the Supervisors than the warehouse functions.
The Effect of Temperature on the Activity of Rennin in Milk Aim: To find out what effect different temperatures have on the enzyme, rennin, in milk. Introduction An enzyme is a biological catalyst. It speeds up a reaction by lowering the activation energy required to start the reaction. It speeds up a reaction, but remains unchanged unless certain limiting factors are introduced.
The effect of a change in PH on enzymes is the alteration in the ionic
The Effect of Temperature on an Enzyme's Ability to Break Down Fat Aim: To investigate the effect of temperature on an enzyme’s (lipase) ability to break down fat. Hypothesis: The graph below shows the rate increasing as the enzymes get closer to their optimum temperature (around 35 degrees Celsius) from room temperature. The enzyme particles are moving quicker because the temperature increases so more collisions and reactions occur between the enzymes and the substrate molecules. After this the graph shows the rate decreasing as the enzymes are past their optimum temperature (higher than). They are getting exposed to temperatures that are too hot and so the proteins are being destroyed.
TCBY has been a frozen treats product innovator from the day its first shop opened in Little Rock, Arkansas in 1981. The great-tasting, low-fat frozen yogurt concept received an enthusiastic response from an increasingly health-conscious public. Its trendy new product propelled the company to the forefront of franchising, and was the ‘first in a long line of ground-breaking menu items that anticipated consumer preferences and continually refreshed the TCBY concept’ (Conlin 2001, p. 133). But TCBY products are just one of the reasons that thousands of operators have concluded that a TCBY franchise is the preferred opportunity in branded frozen treats, and a dynamic partner in any co-branded concept. However, TCBY is facing a lot of problems, both internal and external, during the difficult period from the late 1980s to the early 1990s, especially the problem with its franchising system. The purpose of this report is to provide a comprehensive situation analysis of TCBY, with special reference to its franchising system, and identify several concerned issues of TCBY and its franchisees, and how these issues have negatively affected the relationship between them. Furthermore, this report also provides three recommendations in the attempt to diminish these concerned issues and better maintain the relationship between TCBY and its franchisees, and most importantly, help TCBY to increase the company’s performance and achieve their strategic goals in the next few years.
The purpose of this experiment was to discover the specificity of the enzyme lactase to a spec...
Purpose: The purpose of this lab is to explore the different factors which effect enzyme activity and the rates of reaction, such as particle size and temperature.
In this investigation, the concentration of enzyme will be inversely proportional to the time taken for starch to be digested, until at a certain point where it will level out. It will level out because, all the substrates would have been used up, therefore there will be no more substrates for the enzymes to work on. In effect, the concentration of the substrate will act as a limiting factor. However, enzyme concentration will be directly proportional to the rate of reaction.
The temperature of the reaction, as some of the energy produced converts into heat energy. At really high temperatures the reaction will stop because the heat will have denatured the enzymes.
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Although the milk itself does not have a very long life, other foods and some dairy products can be made using it. Cheese would be the main example of this, which can be produced simply by the curdling of milk. Rennin, found in the substance rennet, is a milk-coagulating enzyme capable of assisting in the production of cheese. Therefore the temperatures at which the milk and rennet coagulate best at in this experiment, are
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