Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Effects of enzyme concentration on catalase activity
Effects of enzyme concentration on catalase activity
Factors influencing catalase activity
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Effects of enzyme concentration on catalase activity
Aim
This experiment attempts to investigate how the temperature change affects the Activity of Catalase Enzyme (rate of reaction).
Research Question
What is the effect of temperature on the activity of catalase enzyme?
Background Information
Enzymes are protein which acts as catalysts throughout a biochemical reaction to help increase enzyme activity (rate of reaction). That different types of enzymes played vital role in the human body in carrying out corresponding functions, such as digestion. Such that catalase is one of the most widespread enzymes. Enzyme activity is therefore affected by surrounding environmental factors. A change in these environmental factors alter the enzyme activity thus the rate of reaction. Moreover, different enzymes produce different optimum rate in which the maximum
…show more content…
As temperature increase, there will be an increase in the kinetic energy in molecules. Thus that should cause more of collisions between molecules per time in liquid form. Therefore the increase in random collisions with substrate molecules respectably increases the rate of reaction. However, there remain risk of bond breaking caused by increase in Vibrational Energy leading to decrease in the rate of reaction.
Variables
Independent Variable (IV)
Air Temperature (0°C; 20°C; 37°C; 45°C)
The independent variable is the air temperature where the experiment would be held in different temperature ranging accordingly from 0°C, 20°C, 37°C, and to 50°C. The experiments would be carries out at different location with the corresponding temperature listed above.
Dependent Variable (DV)
Rate of Reaction
The dependent variable is the rate of reaction.
Controlled Variables (CV)
In the lab, Inhibiting the Action of Catechol Oxidase we had to investigate what type of enzyme inhibition occurs when an inhibitor is added. Catechol oxidase is an enzyme in plants that creates benzoquinone.Benzoquinone is a substance that is toxic to bacteria. It is brown and is the reason fruit turns brown. Now, there are two types of inhibitors, the competitive inhibitor and non-competitive inhibitor. For an enzyme reaction to occur a substrate has to bind or fit into the active site of the enzyme. In competitive inhibition there is a substrate and an inhibitor present, both compete to bind to the active site. If the competitive inhibitor binds to the active site it stops the reaction. A noncompetitive inhibitor binds to another region
After conducting this experiment and collecting the data I would have to say that the optimal temperature for enzyme activity would have to be room temperature which in my experiment was thirty-four degrees Celsius. I came to this answer because the glucose test strip showed that at room temperature there was more glucose concentration that at either of the other temperatures. Due to temperature extremes in the boiling water the enzymes could no longer function because the breakdown of lactose stopped. The cold water also hindered the breakdown of the lactose but as the water warmed the enzymes were more active which can be seen in the results for the cold water at 20 minutes B. Describe the relationship between pH and the enzymatic activity of lactase.
Living organisms undergo chemical reactions with the help of unique proteins known as enzymes. Enzymes significantly assist in these processes by accelerating the rate of reaction in order to maintain life in the organism. Without enzymes, an organism would not be able to survive as long, because its chemical reactions would be too slow to prolong life. The properties and functions of enzymes during chemical reactions can help analyze the activity of the specific enzyme catalase, which can be found in bovine liver and yeast. Our hypothesis regarding enzyme activity is that the aspects of biology and environmental factors contribute to the different enzyme activities between bovine liver and yeast.
Input variables In this experiment there are two main factors that can affect the rate of the reaction. These key factors can change the rate of the reaction by either increasing it or decreasing it. These were considered and controlled so that they did not disrupt the success of the experiment. Temperature-
Independent variables There are many independent variables (which can also be called the manipulated variable- the variable that is varied in the investigation), but I will only vary two of them: the height the ball is dropped, The surface material the ball is dropped on will also be changed. Other variables that could be changed are: -mass of ball -air resistance (this may occur when the ball is dropped from greater heights) -ball material -gradient of surface -size of ball -kind of ball -ball density Dependent variables The dependent or responding variable is the variable that occurs due to factors that are changed in the independent or manipulated variables. If the independent variable is changed, this would affect the dependent variable.
Variables Independent variable: The independent variable is what you are going to do. to change throughout the experiment; in this case it is the light.
Question/Purpose : The purpose of this lab was to learn how construct and analyze graphs by figuring out the speed of the buggy car. The question was simple: did the buggy car maintain a constant speed throughout its movement. We will be changing the distance the car has to move and will be recording how long the car takes to move that distance. Therefore, distance is the independent variable while the time would be the dependant variable.
The input variables are the ones that I can change in order to affect the experiment and the outcome variables are the ones I will measure to see how the input variable has affected it. Input Variables --------------- Amount of calcium carbonate Amount of hydrochloric acid Surface area of calcium carbonate Concentration of hydrochloric acid Temperature of hydrochloric acid Introduction of a catalyst Outcome variables ----------------- Amount of calcium chloride released Amount of water released Amount of carbon dioxide released Change in weight
The dependent variable that will be measured is the height at which the ball bounces back. The control variables that will need to be kept constant if the results are to be as accurate as possible are. 1. What is the difference between a. and a. The weight of the ball; we will use the same ball throughout the experiment to ensure that the results are as accurate as possible.
Explanation of the figure. Experimental Procedures The independent variable in an experiment is the variable that is changed to test its effect on the dependent variable. In this experiment the independent variable was the cleaner used. Four cleaners were chosen each of different brands with different ingredients and prices.
Dependent Variables Amount of vitamin C in fruit juices. Controlled Variable Same amount of liquid for each fruit juice.... ... middle of paper ... ...
The Effect of Temperature on the Rate of Reaction Aim: The aim of this investigation is to find out the effect of temperature on rate of reaction I am going to investigate the changes caused to the solution of hydrochloric acid and sodium thiosulphate when the temperature is changed. Background Information: The rate of reaction varies greatly. Some chemical reactions, such as explosions, happen very quickly while others like rusting occur very slowly. The rate of reaction can be effected by a number of factors: temperature, concentration and pressuring adding a catalyst, surface area, particle size and light.
Controlled variables: Using the same quantity of magnesium and the same concentration of hydrochloric acid. Aim and Purpose The aim and purpose of this experiment is to investigate if the temperature of HCL will affect the rate of reaction between HCL and magnesium. Research Question How does the temperature of hydrochloric acid affect the rate of reaction it has with magnesium? Hypothesis As the temperature of the hydrochloric acid increases, so will the rate of the reaction.
What are the conceptual definitions of your variables? Define each variable clearly and separately.[6
There are independent variables and dependent variables. Independent variables are variables that are changed or controlled in an experiment to test the effects on the dependent variable. Dependent variables are variables that are being tested and measured in an experiment. They may be viewed in terms of “cause and effect”. If the independent variable is changed, then an effect is seen in the dependent variable.