Essay PreviewMore ↓
Aim: I am going to investigate the effects which catalyse has on a
hydrogen peroxide solution
We would use potato to do the experiment because we had done a
previous experiment when we put a piece of potato and liver into a
hydrogen peroxide solution and the rate of reaction for the liver was
too fast to measure and time. But the potato had a slower reaction
which will be easier to time and we can measure the size of the froth
using a ruler.
Enzymes are special shaped protein molecules which act as catalyst and
work in living organisms. Enzymes help speed up the rate of reactions.
Each enzyme has a unique 3D shape which means that they work with
certain types of substrates. This is also known as ‘lock and key’
because the shape of the substrate fits into the shape of the enzyme,
just the way a lock and key do. Enzymes work by attaching itself to
the substrate molecule. The substrate molecule brakes down where the
active site is. The substrate molecule splits and the enzyme is left
unaffected. The factors that affect enzymes are: temperature, pH and
surface area. Enzymes are used in everyday life because all living
things produce enzymes. Saliva in a human produces a lot of enzymes
for digestion. The optimum temperature for these enzymes to work in is
37.5 °C. Enzymes also perform best at a pH which is around neutral.
When an enzyme reaches 40°C it becomes denatured. Enzymes are also
used in industry e.g. bakery, cheese making, starch processing and
production of fruit juices and other drinks
The substrate splits
This is a graph to show the rate of reaction of enzymes due to
graph showing effect of temperature
I predict that the potato cylinder with the diameter of 10mm will
How to Cite this Page
"Investigating the Effects Catalyse Has on Hydrogen Peroxide Solution." 123HelpMe.com. 15 Aug 2018
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- Investigating the Effect of the Enzyme Catalyse On Hydrogen Peroxide Introduction The aim of this experiment is to determine the effects of varying enzyme (catalyse) on Hydrogen Peroxide. Hydrogen Peroxide + Catalyse à Water + Oxygen 2H2O2 à H2O + O2 + Heat Apparatus & Diagram [IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE] Bung Potato Hydrogen Peroxide Water Collected Oxygen Delivery Tube Measuring Cylinder [IMAGE] Using the Equipment Safely It is important that we use the apparatus carefully, as safety will be an issue throughout the whole experiment.... [tags: Papers]
1005 words (2.9 pages)
- The Effect Of Catalase On Hydrogen Peroxide Planning Catalase is an enzyme found in the blood and in most living cells its job is to speed up the decomposition of hydrogen peroxide into water and oxygen. 2H2O2 + Catalase ¾¾¾¾¾¾¾® 2H2O + O2 The chemical compound hydrogen peroxide (H2O2) is a viscous liquid that has strong oxidizing properties and is also used as a powerful bleaching agent that has found use as a disinfectant and (in strong concentrations) as an oxidizer.... [tags: Papers]
1249 words (3.6 pages)
- The Effect of a Catalase on the Breakdown of Hydrogen Peroxide Aim To follow the progress of a catalysed reaction by measuring the volume of gas produced as the reaction proceeds. Using the initial rates of a series of experiments I will be able to find the orders of the reaction with respect to enzyme and substrate. Also to find out if concentration has an effect on the reaction when an enzyme is used to accelerate the breakdown of hydrogen peroxide. Introduction / Background Information.... [tags: Papers]
1121 words (3.2 pages)
- Analysis of the Decomposition Rate of Hydrogen Peroxide With Catalase As a Catalyst Aim: To measure the rate of decomposition of Hydrogen Peroxide with Catalase from a Yeast solution using PH as a variable. Hypothesis: The enzyme Catalase speeds up the Hydrogen Peroxide decomposition as its active sites match the shape of the Hydrogen Peroxide molecule. This process will only work at certain PH levels as the Enzyme sites may become disfigured at extremes. Logic suggests that Catalase will work well at PH7 Neutral, but due to the nature of Catalase removing Hydrogen Peroxide from human body cells a slightly acidic solution might work just as well.... [tags: Papers]
654 words (1.9 pages)
- Activity of the Enzyme Catalase with Hydrogen Peroxide Background Information: An enzyme (Catalase) is a biological catalyst. It can modify the rate of reaction without being changed itself. Enzymes are also globular proteins that have a three-dimensional specific shape; among with a pocket known as the active site, this has a precise shape to link with the exact substrate. Every enzyme are capable of converting one kind of substrate molecule into one kind of product molecule, which forms the enzyme-substrate complex.... [tags: Papers]
2153 words (6.2 pages)
The Effect of Substrate Concentration on the Rate of Reaction Between Yeast Catalase and Hydrogen Peroxide
- The Effect of Substrate Concentration on the Rate of Reaction Between Yeast Catalase and Hydrogen Peroxide Useful info The Enzyme Catalase is a protein molecule which is found in living cells. It is used to speed up reactions in the cells. It is a very specific enzyme and just performs one particular reaction. Catalase is an enzyme found in cells in potatoes and liver and is used for removing Hydrogen Peroxide from the cells. Hydrogen Peroxide is the poison produced during metabolism.... [tags: Papers]
1242 words (3.5 pages)
- Investigation Into The Effect Of Changing The Substrate Concentration On The Enzyme Catalyse Introduction ============ I am experimenting the effect of substrate concentration on the action of the enzyme catalyse. I will investigate this by experimenting to see how long it takes to fill a test tube full of the gas from the reaction, which is oxygen. I will use different amounts of catalyse in the form of yeast to test how long it takes to fill the test tube with oxygen, which is one of the products from the reaction.... [tags: Papers]
1019 words (2.9 pages)
- The Effect of the Enzyme Catalase on Hydrogen Peroxide When the Temperature is Changed Plan: Chemical reactions take place in all living cells. All of these reactions are enzyme-driven. Some of these reactions produce by-products. One by-product is Hydrogen Peroxide (H2O2). It is a poison and must be removed from the cells. The cell produces an enzyme called Catalase to break down the Hydrogen Peroxide into water and oxygen. This experiment will investigate the effect of temperature on the rate of the breaking down of Hydrogen Peroxide by Catalase.... [tags: Papers]
893 words (2.6 pages)
The Effect of Changing the Concentration of the Enzyme Catalyst on the Rate of Reaction on Hydrogen Peroxide
- The Effect of Changing the Concentration of the Enzyme Catalyst on the Rate of Reaction on Hydrogen Peroxide Planning -------- Hydrogen Peroxide Water + Oxygen 2H2O2 2H2O + O2 Introduction - Background Information ------------------------------------- To help me understand what a chemical reaction is or involves I did some research. A chemical reaction is a process by which atoms or groups of atoms are redistributed, resulting in a change in the molecular composition of substances.... [tags: Papers]
1965 words (5.6 pages)
- Rate of Catalase Activity Background Information Enzymes such as catalyse are protein molecules, which are found in living cells. They are used to speed up specific reactions in the cells. They are all very specific as each enzyme just performs one particular reaction. Catalyse is an enzyme found in food such as potato and liver. It is used for removing Hydrogen Peroxide from the cells. Catalyse speeds up the decomposition of Hydrogen Peroxide into water and oxygen. It is able to speed up the decomposition of Hydrogen Peroxide because of the shape of the Hydrogen Peroxide molecule.... [tags: Papers]
710 words (2 pages)
The reason I predict this is because it has a larger surface area
which means that it contains more enzymes, therefore there should be a
faster rate of reaction.
· Measuring cylinder
· Hydrogen peroxide solution
· Potato borer
· Spotting tile
· Place a potato on a spotting tile and use the borer and bore it into
· Extract the potato.
· Use a ruler to measure the length of the extracted potatoes then cut
it so the potatoes are all the same length which will be 20mm.
· Pour 75ml of hydrogen peroxide solution into a beaker.
· Pour 10ml of the solution into a measuring cylinder.
· Afterwards, drop the potato cylinder into the solution
· Time the rate of reaction using a stop watch per minute for
10minutes and measure height of froth every minute.
This process will be repeated 3 times with potato cylinders with
diameters of 5mm, 8mm and 10mm.
The factors which I would not change are:
· the time the potato cylinder is in the solution
· the volume of hydrogen peroxide solution
· The length of potato cylinders
· The variety of potato
The reason I would not change these variables is so that I can make
the experiment a fair test.
The variable I will change is:
* [IMAGE]The diameter of the potato cylinder
The reason why I am changing this variable is because I want to see if
the hydrogen peroxide solution will react if there are more or less
The graph I produced showed me that the potato cylinder with a
diameter of 8mm reacted faster than the potato cylinders with a
diameter of 5mm and 10mm. The pattern I see is that the reaction keeps
on increasing. The graph I produced to show my results was a curved
line graph because the pattern of the results produced a curve. My
results did not agree with my prediction because I predicted that the
10mm potato will react the fastest but instead the 8mm potato did.
I made a table to show my readings on the experiment I observed. I
repeated the experiment three times for each potato diameter to make
the results more accurate. I then found the average result for each
potato cylinder. The diameter was measured in millimetres and the unit
of time we used was measured in minutes.
The results were not very good because the results from the graph did
not prove my prediction right. There were some points on the graph
that did nit fit on the curved line so I circled these points. The
experiment happened over a few days so that could have caused my
results to be read wrongly. I could improve this experiment by working
a lot quicker so that I can be sure that the potato cylinders are from
the same potato to make my results more accurate and to make it more
of a fair test.