how does enzymes effects the temperature on the rate of reaction?

Answer 1

The effects of temperature may be explained on the basis of kinetic theory - increased temperature increases the speed of molecular movement and thus the chances of molecular collisions, so within a narrow range (often 0-45 °C), the rate of reaction is proportional to the temperature. It is often said that an enzyme's rate of reaction doubles for every10° C rise in temperature. In this respect, the biochemistry of enzymes is similar to chemistry as studied elsewhere, However, the interaction between this positive effect of increased temperature and the negative effect described below results in a different situation, so that enzymes may be said to have an optimum temperature for their action.
4 Above normal temperatures (say 60 °C), heat alters irreversibly the enzyme molecule. This denaturation is due to molecular vibrations (caused by heat) which change the shape of the protein, altering the folding and internal cross-linkages in its polypeptide chains. These changes - especially in the region of the active site - mean that the enzyme is inactivated, even when returned to normal temperature.
It would be wrong to say that an enzyme is KILLED by heat, since it is only a molecule, not an organism.
However, misconceptions of this sort are easily spread (see the BASC enzymes booklet!)



The higher the temperature to which the enzyme is subjected and the longer the heating is continued, the greater the proportion of damaged enzyme molecules and the result is that the conversion process becomes less and less efficient.





Below normal temperatures, enzymes become less and less active, due to reductions in speed of molecular movement, but this is reversible, so enzymes work effectively when returned to normal temperature.

Answer 2

I think your question should be more adptly phrased as ... enzymes affect the temperature at which the reaction is carried out. If i didn't misinterpreted i tworngly; i guess the answer would be : Enzymes are biological catalyst. Catalyst works mainly by lowering the activation energy of the reaction. As the activation energy is lowered, there is more molecules that can cross the energy barrier at a lower temperature to react with each other. Thus the reaction occurs at a lower temperature

Answer 3

Temperature affects the rate of reaction of an enzyme, it will have an optimum temperature usually around 37 deg c but depends upon the enzyme

Answer 4

Each enzyme has an optimal temperature for it to react well. Bellow that, there isn't enough energy for the reaction. Above it the enzymes break apart (like a hard boiled egg).
Most enzymes in our body oprate at an optimal temperature of about 37C. Plant enzyemes work best at 25C and so on.

Answer 5

The temperature effects the enzyme, not the other way around. The reason our tempuratures need to maintain a ~98.6 temp is that the enzymatic functions our bodies need to survive work best at this temperature. Its important that we do not get too hot. The reason a high temperature is so dangerous is that the enzymes are destroyed at higher heats and then you die. :)

Answer 6

Do you mean how does temperature affect the rate of enzymatic reaction? As temperature increases, the kinetic energy of reactants increase and they collide more often. The frequency of effective collisions between substrates increase and more enzyme-substrate complexes are formed per unit time. Hence rate of reaction increases.

Answer 7

the colder the temperature the slower the enzymes work

Answer 8

Just wanted to add that some enzymes do work at radically different temperatures - see 'thermus aquaticus' on google.

Answer 9

It increases it as it is called a natural catalyst. Ideal temperaute 37 degrees