The reason why an enzyme fits a specific substrate is due to its 3rd dimensional shape. Enzymatic competition involves competition among several different available enzymes to combine with a given substrate material.
A substrate is a molecule that fits into the active site of an enzyme. The active site is a specific region of the enzyme where the substrate binds, allowing the enzyme to catalyze a specific chemical reaction.
The substrate fits into the enzyme, much the way a key fits in a lock. Sometimes there are other "modulators" that also fit in the enzyme.
Substrates typically bind to the active site of an enzyme, which is a specific region where the chemical reaction takes place. The active site has a specific shape that fits the substrate molecule, allowing for precise and efficient catalysis.
Lock and key is an analogy of enzyme catalysis in a cellular reaction. The lock and key are compared directly to the substrate and enzyme, because of the high specificity of their physical shape. Enzymes participate in the reaction they catalyze. The reactant molecule (substrate) binds to the enzyme molecule at a particular location called the active site. (this is compared to the lock with keyhole) The highly specific nature of an enzyme is due to very precisely defined arrangement of atoms in the active site(again, this is the lock in the analogy). The substrate molecule must have a matching shape (here is the key) that will fit into the active site. The bond breaking and bond forming processes that transform the substrate into products occur while the substrate is bound to the active site of enzyme. In other words its something like a jigsaw puzzle where the substrate fits into the enzyme. The reaction occurs and the substrate then leaves the enzyme as products. ( Not my work. Found it on Yahoo Answers.....Do not give me credit...Thought I should do this to help people out =] ) Edited answer for readability and clarity - thanks!
The molecule that fits into the active site of an enzyme is called a substrate. Substrates bind to the active site of an enzyme, where they undergo a chemical reaction to form products. This process is essential for the catalytic function of enzymes.
A substrate is a molecule that fits into the active site of an enzyme. The active site is a specific region of the enzyme where the substrate binds, allowing the enzyme to catalyze a specific chemical reaction.
When a substrate fits into the active site of an enzyme, an enzyme-substrate complex is formed. This complex allows for the enzyme to catalyze a specific chemical reaction on the substrate.
The substrate fits into the enzyme, much the way a key fits in a lock. Sometimes there are other "modulators" that also fit in the enzyme.
The model you are referring to is the lock-and-key model of enzyme-substrate interaction. This model proposes that enzymes have specific active sites that perfectly fit the substrate, similar to how a lock fits a key. This precise fit allows for the formation of the enzyme-substrate complex and subsequent catalysis of the reaction.
That is the active site. Substrate binds to it
The active site is where the substrate binds to the enzyme. It is a region on the enzyme where the chemical reaction takes place. The active site is specific to the substrate molecule, allowing for precise catalysis to occur.
nothing.
Where the substrate and the enzyme fit is called the active site. There are substance that can inhibit this fit.Natural poisons are often enzyme inhibitors that have evolved to defend a plant or animal against predators. These natural toxins include some of the most poisonous compounds known.
Substrates typically bind to the active site of an enzyme, which is a specific region where the chemical reaction takes place. The active site has a specific shape that fits the substrate molecule, allowing for precise and efficient catalysis.
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.
lock and key theory
Enzymes have specific active sites that bind to specific substrate molecules, allowing them to catalyze specific reactions. Each enzyme has a unique shape that fits specific substrates like a lock and key. This specificity enables the enzyme to function in the cytoplasm of a cell with many other enzymes.