How enzymes speed up catalyze reactions?

Answer 1

Because there are more substrates for the enzyme to act on. Bear in mind, these are random chance reactions, they rely on the enzyme physically contacting the substrate, this happens at a greater rate early in the reaction.

Answer 2

Catalase belongs to the group of oxidoreductase-catalysts. That means it enhances its reaction (from H202 to H20 + 1/2 O2) by donating/accepting a proton (H+) in the Reduction-Oxydation process. Without Catalase, the H202 would have to wait until a proton finds its way by chance to it.

Answer 3

Because enzymes provide a perfect-fitting "scaffold" for the reactions. Imagine you want to fuse a glucose and fructose molecule in order to create sucrose. There is only one spatial position of those two molecules in which they would be able to merge. Plus, they need some energy to achieve the merging. There is many many random ways for these two molecules how to fail this.

But using an enzyme, the enzyme will "grab" those two molecules like by a hand, perfectly adjusting them into the needed position, and it might even provide some energy needed for the reaction. Thus, the reaction is achieved in much shorter time.

Answer 4

Yes. Enzymes are essential in aiding the bonding of elements / compounds. Enzymes have at least two 'slots' for which a certain element / compound might fit, and they never have to be the same. When both / all of them are in place, they form bonds with each other and begin sharing electrons to reach a noble-gas electron configuration (stabilizing the whole compound.) In the absence of an enzyme, the elements would need to randomly bump into each other within the cytoplasm at the EXACT orientation in order to make a lasting bond, and the chances of that happening are painfully low. This makes enzymes a decent catalyst of bonding and the reactions happen more frequently.

The speed of the reactions themselves is also improved, as the reactants are held in place by the enzyme, making it easier for electron exchanging to occur.

Answer 5

enzyme catalyzed rxn can enhance the rate of rxn by 5 to 17 orders of magnitude. so times the original rxn by 105 thru 1017 in terms of time

Answer 6

It is always not necessary that enzyme will increase the speed fo the raction. It all depends on the type of the reaction and the type of the enzyme

Answer 7

Much faster. Depends on the enzyme that the amount of substrate though. Or the amount of co-facotors and other things that may be necessary for catalysis.

Answer 8

Enzymes speed up the biological reactions because they are catalysts.

Answer 9

Enzymes lower the activation energy needed to start a chemical reaction.