For every one of the tens of thousands of biological enzymatically controlled Biochemical Reactions, Just One Enzyme Has Utter And Complete Control over it's Reaction.
One Lock is Operated, as expected, by just One Key.
just like keys will open a particular lock, enzymes will catalyse only a particular reaction.
The Lock and Key analogy states that enzymes are highly specialized and will only fit certain substrates. However, this is incorrect because it is actually an induced fit.
ALL enzymes use the lock and key model!
Enzymes and the substrates they work on fit like a lock and key, if you change the shape of the key, the lock won't open. An enzyme whose shape changes is no longer able to activate the reaction of the substrate.
Enzyme substrate 'lock and key'.Enzymes can work by:attracting and sticking to the reacting molecules making it easier for them to meetproviding an alternative route for the reaction with a lower activation energy , so that a greater proportion of the collisions have more than enough energy to succeedholding the molecules the right way round so that the reactive groups are brought together.
just like keys will open a particular lock, enzymes will catalyse only a particular reaction.
The Lock and Key analogy states that enzymes are highly specialized and will only fit certain substrates. However, this is incorrect because it is actually an induced fit.
The Lock and Key Analogy of Enzymes and Substrates:Enzymes act as a catalyst in a given chemical reaction (for example, lactase allows lactose to break down into Glucose and Galactose); enzymes lower the amount of energy required to make a reaction occur. There is a key concept to this theory: Enzymes are designed work for only one reaction; there is only one key that fits the lock perfectly.Without enzymes, our bodies wouldn't be able to handle the amount of heat the reactions that occur inside if there weren't any enzymes (or the reactions just wouldn't occur!In the Lock and Key Analogy, the substrate (Lactose in the example) is the "key". The key must fit perfectly into the active site that is on the enzyme, or the "key hole in the lock (Lactase is the Lock in the example). The substrate will then break down into its products (which in the example would be the Glucose and Galactose).This can happen in different ways: 1) two (or more) substrates can bind onto the same active and combine to form one product; 2) one substrate can bind onto an active site and break down to form two (or more) products......Here is a picture of what the Lock and Key Theory looks like:http://i677.photobucket.com/albums/vv133/erica46829/LockandKeyTheory.jpg
ALL enzymes use the lock and key model!
The structure of an enzymes and its active site determine which substrates will work for the enzyme. This is called the lock and key method. The active site is the lock and the substrate is the key.
I believe it is a "Key in a lock" formation
the answer is lock and key model .
enzymes and substrates
a key fitting in the lock of a door
If the key turns, but the lock doesn't function, then the lock is broken.
It is when the enzyme (lock) fits exactly into the substrate (key) forming an enzyme substrate complex. It refers to enzymes and their substrates. The enzyme has an active site (lock) where the substrate that is complemetary fits in (key). Only substrates that fit perfectly into the enzymes active site will active the particular reaction, just like only 1 specific key will open a door.
The lock and key model was suggested by Emil Fischer in 1894. It stated that enzymes and substrates possess specific complementary shapes that fit exactly into one another.