Essays Tagged: "Active site"
Biology AT1 on the affect of hydogen peroxide on the liver
yme, it fits into a depression on the surface of the enzyme molecule. This depression is called the active site. The reaction then takes place and the molecules of product leave the active site, freei ...
Subjects: Science Essays > Biology > Human Biology
This biology experiment was conducted in order to see if the change in environmental factors had any effect on enzyme activity.
that speeds up a reaction. Each enzyme is specific meaning that if the enzyme fails to bind at the active site with the substrate, the reaction does not take place. Enzymes are affected by environmen ...
Subjects: Science Essays > Biology
An AP Biology Lab: Inhibiting the Action of Catechol Oxidase
r that literally "competes" with the substrate by mimicking it, and thus "wins" the position at the active site of the enzyme. The blocked substrate in turn cannot join with the active site, causing t ... bitor? A noncompetitive inhibitor also joins with the enzyme, but it joins to a site other than the active site. This action changes the enzyme's nature causing the enzyme to lose its catalytic proper ...
Subjects: Science Essays > Biochemistry
Catalase investigation
one substrate. The site of the reaction occurs in an area on the surface of the protein called the active site. Since the active site for all molecules of one enzyme will be made up of the same arran ... it. This is when the enzyme and substrate form a complex and a structural change occurs so that the active site fits precisely around the substrate (the substrate induces the active site to change sha ...
Subjects: Science Essays > Biology
Enzyme-controlled reaction, factors that affect the chemical structure and properties of the enzyme.
the enzymes and substrate and so increasing the rate of reaction. At these higher temperatures the active site of the enzyme is actually fairly flexible. The heat has broken a small number of Hydroge ... Hydrogen bonds which hold the site to its shape. According to the lock and key theory the enzyme's active site is specific to the substrate and so they fit together. The enzyme only catalases a singl ...
Subjects: Science Essays > Biology
Lab report on enzyme activity.
es and jobs. As one ball player may be very tall and one short, the specific different shape of the active site on an enzyme is unique and prepares it to mix with a certain substrate. Without enzymes, ... re joined, the substrate is converted to its product by catalytic action of the enzyme. There is an active site of the enzyme molecule which is a restricted region that actually attaches to the substr ...
Subjects: Science Essays > Biology
Can life exist without enzymes?
ments Carbon, Nitrogen and Hydrogen. Each enzyme has a specific 3-dimensional configuration, and an active site specific to the molecule it binds to. The active site is made up of a unique sequence of ... he substrate binds and undergoes a series of catalytic reactions after which the products leave the active site. This leaves the enzyme free to carry out more catalytic reactions. An enzyme is also se ...
Subjects: Science Essays > Biology
Enzyme on hydrochloric acid and yeast.
ecific, this means that they can have only one substrate that they will work on. Each enzyme has an active site that is where their own specific substrate molecule will fit. Enzymes all work best at a ... normally 40C it will start to become denatured and therefore no longer work on its substrate as the active site has changed shape. In addition, enzymes usually work best at an optimum pH level, this i ...
Subjects: Science Essays > Biology
To investigate the effect of surface area on the rate of reaction using the enzyme Catalase, found in potato, and the substrate Hydrogen Peroxide.
globular protein is a protein with its molecules curled up into a 'ball' shape. All enzymes have an active site. This is where another molecule(s) can bind with the enzyme. This molecule is known as t ... enzyme, a product is produced. Enzymes are specific to their substrate, because the shape of their active site will only fit the shape of their substrate. It is said that the substrate is complimenta ...
Subjects: Science Essays
An investigation to compare the reaction rates between potato an hydrogen peroxide and liver and hydrogen peroxide
lex folding which gives it its globular shape. The tertiary folding of the enzyme also gives it its active site. The active sit of an enzyme is the part of the enzyme that determines what the enzyme w ... sit of an enzyme is the part of the enzyme that determines what the enzyme will react with. If this active site is destroyed in any way the enzyme is said to be denatured and will no longer work. Cert ...
Subjects: Science Essays
An investigation into the effect of substrate concentration on the activity of the enzyme catalase in potato tissue.
sion, which other molecules (substrates) fit into perfectly; this part of the enzyme, is called the active site. The tertiary folding of the polypeptides causes the intricate specific shape of the act ... polypeptides causes the intricate specific shape of the active site. The substrates are held in the active site by forming temporary bonds with the hydrophilic R groups of the enzyme's amino acids.Her ...
Subjects: Science Essays
To investigate the effect that surface area has on the rate of reaction
globular protein is a protein with its molecules curled up into a 'ball' shape. All enzymes have an active site. This is where another molecule(s) can bind. Enzymes are biological catalysts tha ...
Subjects: Science Essays > Biology
Enzymes and Their Properties
in contact with each other, no longer relying on chance collisions. Most enzymes end in 'ase'. The active site of the enzyme is the part that comes in contact with the substrate, which is the molecul ... he molecule acted on by the enzyme. There are 2 models that show how they work: -Lock and Key Model-active site only allows certain molecules to fit in, molecule separates and leaves, enzyme is unchan ...
Subjects: Science Essays > Biology
Investigation into the functions, structure and reactions of enzymes
one substrate. The site of the reaction occurs in an area on the surface of the protein called the active site. Since the active site for all molecules of one enzyme will be made up of the same arran ... f the same arrangement of amino acids, it has a highly specific shape. Generally, there is only one active site on each enzyme molecule and only one type of substrate molecule will fit into it. Chymot ...
Subjects: Science Essays > Biology
Biology Coursework on Catalyse
reactions in the body, they do this by bringing together a small number of amino acids for form the active site (the location on the enzyme where the substrate binds and the reaction takes place (see ... y TheoryThe Lock and Key theory says that when the substrate attempts to bind with an enzyme at the active site that the enzyme and the substrate have an appropriate molecular design so that substrate ...
Subjects: Science Essays > Biology
The effect of hydrogen peroxide on catalyse if you change the temperature
Enzymes are proteins; they have a very precise three-dimensional shape, which forms a one specific active site on the enzyme. Each enzyme can only convert one kind of substrate molecule in to one kin ... intra molecular bonds that hold the 3D shape. Because of this the shape is altered. Enzymes have an active site. This fits into the substrate molecular, the LOCK AND KEY theory demonstrates this.If th ...
Subjects: Science Essays > Biology
Investigation Of Enzymes And Hydrogen Peroxide
speed up chemical reactions. In their globular structure, a small number of amino acids to form the active site. Enzyme and substrate fail to connect if their shapes do not match exactly. This ensures ... o be disrupted.Many proteins are denatured by temperatures around 40 - 50°C, but some are still active at 70 - 80°C, and a few withstand being boiled. So, my prediction is that the enzyme will ...
Subjects: Science Essays > Biology
Biology HSC Notes - Maintaining a Balance
he model used describes how the enzyme closely fits into the shape of the substrate (compound). The active site is where the enzyme catalyses the reaction.Diagram:Acidity of a substancePH levels descr ... space. Nutrients pass from cell to cell via plasmodesma. Transport requires energy? Active - requires energy. The transport of organic materials (sugars, hormones, amino acids) ...
Subjects: Science Essays > Biology
Coursework and practical plan for title "Investigate the effect of temperature on the action of the enzyme diastase on starch."
nzyme is a globular protein with a tertiary structure of polypeptides- this gives the enzymes their active site shape. I also know how enzymes work- there is the "lock and key" theory which suggests o ... ymes work- there is the "lock and key" theory which suggests one enzyme for one substrate, with the active site being the correct shape, but also the "induced fit" theory which suggests enzymes are lo ...
Subjects: Science Essays > Biology
Specificity and Catalytic Effectiveness of Enzymes
e reacts with, are called substrate. Enzymes reduce the activation energy needed for a reaction. An active site is the specific portion of an enzyme that attaches to the substrate by means of weak che ... s the specific portion of an enzyme that attaches to the substrate by means of weak chemical bonds. Active sites can lower the activation energy of the reactants by providing suitable microenvironment ...
Subjects: Science Essays > Biology