Which aspect of a chemical reaction is affected by enzymes?
Enzymes affect the activation energy of a chemical reaction, thereby making the reaction take place quicker and with less energy required than usual. They do NOT change the products of the reaction however.
Which aspect of a chemical reaction is affected by enzymes?
Activation energy is reduced by the nature of enzymes. That's about it!
Enzymes affect two aspects of a chemical reaction ________ & _________?
decomposition and recombination of compounds.... you can also say...acceleration and slowing chemical reactions...
How do enzymes affect chemical reactions?
They bring the reactants closer together, chemical bonds may be weakened and reactions will proceed faster than without the catalyst. They also lower the energy required for starting the reaction which means the reaction can then take place at a lower temperature, in the presence of less light, etc...
How do protein enzymes affect chemical reactions?
I'm studying for biology finals and I'm having problems answering this so pleeeease help! They want me to explain how protein enzymes affect chemical reactions(break down of food, growth and repair of bofy parts,regulation of cell division, and differentiation) I know it sounds hard thats why I need help!!
How do enzymes affect chemical reactions in living cells?
Enzymes are biological catalysts.They lower the activation energy necessary for the reaction to occur, and that makes the chemical reactions quicker in living cells.
How do enzymes affect reactions?
One word: Catalysts (for chemical reactions within the body.)There are two factors involved in any chemical reaction: Kinetics and Thermodynamics.Kinetics usually define reaction rates, that is, how fast a reaction would go. (Which also means that they describe whether a reaction would take place at all, given a certain set of conditions.)Thermodynamics deals with energies, especially the ‘energy’ of the reactants and that of the products. It is non-trivial to measure the actual energy values for a given molecule. Thus, all we really measure in a reaction is the ‘difference’ between energies of the products and the reactants (∆H or G etc.) Thermodynamics tells us is whether the reaction would release energy (exothermic) or absorb energy (endothermic).All these parameters are very easily describe using what chemists call a ‘potential energy curve’ which looks something like this:We have the potential energy (either H or G, usually G is preferred. Above, it is H) measured as a function of reaction coordinate (very technical and complex to understand in tangibility terms). In simple terms, reaction coordinate describes the various stages a reactant would pass through on its way to the product.We observe that the reaction is exothermic. (energy is released from reactants to products). However, the most important parameter I wish to bring your attention to, is the ‘activation energy’ (Ea). This is a kinetic parameter, and determines the amount of energy needed by the reactant to ‘activate’ and cross the ‘potential energy barrier’ to continue its downhill journey to product. Thus, it actually decides whether a reaction would go or not at a given condition, and how fast or slow it will be.What enzymes, or catalysts in general do is reduce the activation energy for a reaction, making it more feasible to take place, at a given condition. A typical potential energy diagram of a catalysed and uncatalysed reaction is:Thus, the catalyst helps the reaction to produce easily, under milder conditions.A real enzyme-catalyzed reaction has a more complicated potential energy curve, like this:The idea remains the same. Most chemistry reactions need to be performed in toxic organic solvents, at elevated conditions of temperatures ranging in a few 100 degree celsius. Such reactions, when catalysed by enzymes occur in water and at 37 degree celsius! Thus, enzymes are extraordinary bio-molecules that fascinate all chemists who study them (including me!)
How is the rate of a reaction affected by enzymes?
It is increased. Well that's the simple answer, because the question is obviously referring to enzymes already determined to be helpful in a reaction and it's not really a real world application.In the real world, you must ensure you have the right enzyme, proper concentrations, etc. It's much more complicated, and sometimes more than one enzyme is even utilized, like a multi step system.
Does temperature affect an enzyme reaction?
yes of course .. Many of the enzymes in our bodies work best at body temperature. At significantly lower temperatures the substrate molecules do not have enough kinetic energy for the reaction to take place even in the presence of the enzyme. At body temperatures significantly higher than normal, the enzyme will not work well because the kinetic energy from the molecules in the solution containing the enzyme is so high, that the enzyme's shape is pulled apart to he point that the enzyme is not able to properly function. Indeed the enzyme's structure may be so disrupted or denatured hat the enzyme molecule cannot return to its original shape. Indeed the danger of high fevers stems in large part from the potential damage to enzymes and other proteins from the high temperature
How does an enzyme affect the activation energy for a chemical reaction?
it lowers the activation energy and therefore the reaction will be fast