An enzyme binds to a specific substrate (reactant) for the reaction catalyzed.
Biological catalysts. They alter the speed of a reaction without undergoing permanent changes themselves.
Enzymes are organic molecules that are highly specific catylists for biological chemical reactions. Enzymes are not permanently changed by the reactions that they catalyze, although the may transiently change shape a little during the reaction. At the end of the reaction, the enzyme is the same shape that it was at the beginning.
Catalase is an enzyme that is substrate-specific, meaning that it has a particular reaction that it will catalyze (to speed up a reaction). Hydrogen peroxide (H2O2) is the specific substrate reactant with which catalase will react (in a degradation reaction). This is the degradation (breaking down of) reaction. 2H2O2 yields 2H2O+O2 O2 is oxygen which is indicated by the rising of bubbles upon reaction between the hydrogen peroxide and the catalase. Sucrose is not the specific substrate assigned to the catalase enzyme, therefore they will not react together in a degradation reaction, hence the lack of oxygen release (lack of bubbles). I hope this was helpful to you. God bless and Jesus loves you.
Each enzyme can catalyze a wide variety of different reactions.
Lactase catalyzes the breakdown of lactose. It would probably not catalyze the breakdown of starch because enzymes are SPECIFIC and are typically named for the substrate that it acts on. Amylase is the enzyme that catalyzes the breakdown of starch. (Named so because in plants, starch is stored in the amyloplasts)
Biocatalysts usually are very specific to the reaction that they catalyze. So many only speed up one reaction. Quite often a chain reaction occurs where numerous enzymes catalyze reactions at different points speeding up a process that would take much longer and propelling the reaction through numerous phases.
Catalysts speed up reactions and they do this by decreasing the activation energy. The way they decrease the activation energy is by providing an alternate pathway for the reaction. Because there are so many different reaction mechanisms/pathways in chemistry, there must be many different catalysts.
They are called enzymes; each one is specific for one metabolic reaction.
Enzymes are often substrate-specific, meaning they will only catalyze a reaction with a certain molecule. The difference in structure between amylose and amylopectin causes amylase to catalyze one and not the other.
Often enzymes require a cofactor in order for them to function as a catalyst
In every biochemical reaction in the body, a specific enzyme is required to catalyze (speed up) the reaction. These enzymes are required for the reaction to take place, but are not consumed themselves in the reaction.
specific-meaning it is only able to catalyze a reaction with a certain molecule.
They are used to, with an unexpected degree of efficiency, catalyze a specific chemical reaction. This means maximizing harmless and useful chemical-reaction products while minimizing the [inevitable] wasteful and useless byproducts of the chemical reaction.
A large number of reactions occur in the cell, many of which requiring enzymes to work. From the creation of the ATP used to energize the cell to the creation of proteins from RNA, each new type of reaction needs its own enzyme to work, and often need dozens if not hundreds of that enzyme to do the reaction at the pace it needs.
Biological catalysts. They alter the speed of a reaction without undergoing permanent changes themselves.
Old, worn out cell parts or harmful invaders
Many thousands of individually functioning Enzymatic Units. Yes, each enzyme has it's own unique chemical reaction to catalyze.