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Enzymes are catalysts for chemical reactions. All chemical reactions are affected by temperature. Higher temperatures make the reactions happen faster, and colder temperatures make them happen slower. At 37 degrees, just a little above freezing, many biological enzymes practically stop working.
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What factors increase the rates of enzyme-controlled reactions?
** TEMPERATURE ** pH LEVEL ** PARTICLE SIZE ** SUBSTRATE CONCENTRATION
What is the function of an enzyme?
The function of an enzyme is to increase the rate of a reaction.
What happens when an enzyme catalyzes a reaction?
The rate of a reactions usually increases when catalyzed by an enzyme. For maximum rate of activity, the enzyme needs optimal conditions.
What can Tobin conclude about the relationship between the enzyme concentration and the reaction rate in the presence of excess substrate?
There is a direct relationship; as the enzyme concentration increases, the rate of reaction increases.
Why would you expect the rate of an enzyme-catalyzed reaction to increase proportionately to enzyme concentration given an unlimited supply of substrate?
No, since the reaction reaches a max rate depending on the speed of which the Enzyme bonds to the substrate and the speed at which the enzyme catalyzes the reaction to produce enzyme and product (shown below). E + S --> ES (E - enzyme, S - substrate, P - products) ES --> E + P Thus, if each reaction rate is not equal to each other, the rate of the overall reaction is not only proportional to both the concentration of enzyme and substrate.
How does the non-competitive inhibitor decrease the rate of an enzyme reaction?
Noncompetitive inhibitors decrease the rate of an enzyme reaction by bonding to an enzyme somewhere other than the active site, deforming it and permanently disabling the enzyme, so that enzyme can never function again, so the rate of reaction decreases.
As temperature decreases the rate of an enzyme-catalyzed reaction also decreases why?
Just like many other chemical reactions, the rate of an enzyme-catalyzed reaction will decrease with temperature because of the decrease in the number of high energy collisions between particles.
What are three factors that control the rate of enzyme reaction?
Presence of:Competitive inhibitorsNon-competitive inhibitorsAllosteric sitesNegative feedback inhibitionIncrease/decrease of enzyme/substrateCooperativity
What would increasing the temperature do to the reaction rate?
In most Chemical reactions, the reaction rate increases, though when side reactions are possible these can get more favoured. When no side reactions can happen, the the reaction rate will just increase. In biology, it is possible the reaction rate increases for only a small amount of time. If you use an enzyme developed to work at 10 degrees celsius, it can denaturate at 30 degrees celsius, causing the reaction to stop or slow down due to an decrease of active enzyme
Why does the concentration of the enzyme make a difference to how fast the reaction works?
What is the relationship between an enzyme temperature and the chemical reaction in which the enzyme is invoved?
Rate increase with temperature up to 40 celcius.But it decrease to 60 celcius and stops after.
What factors increase the rates of enzyme-controlled reactions?
** TEMPERATURE ** pH LEVEL ** PARTICLE SIZE ** SUBSTRATE CONCENTRATION
What has no effect on the rate of an enzyme-catalyzed reaction?
When an enzyme is saturated the amount of substrate added no longer as an effect on the rate of the reaction.
What is the function of an enzyme?
The function of an enzyme is to increase the rate of a reaction.
What happens when an enzyme catalyzes a reaction?
The rate of a reactions usually increases when catalyzed by an enzyme. For maximum rate of activity, the enzyme needs optimal conditions.
What happens when increasing the substrate concentration when there is less substrate than enzyme?
Dunno. But this is pretty cool. But if i search the question, i obvioudly don't know it, so why would i be given an optionto answer it?
What can Tobin conclude about the relationship between the enzyme concentration and the reaction rate in the presence of excess substrate?
There is a direct relationship; as the enzyme concentration increases, the rate of reaction increases.
