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Do enzymes affect the thermodynamics of a reaction true or false?
Wiki User
∙ 12y ago
Enzymes have no effect on the overall thermodynamics of a reaction.
Wiki User
∙ 12y ago
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According to the second law of thermodynamics it is not possible to change heat completely into work with no other change taking place?
That is false. The two are not directly related.
Action reaction forces always act on the same objects True or false?
False.
Is the first law of thermodynamics states that energy can be transformed in different ways but can never be created or destroyed. A.True?
true
Is the making of ice cubes an exothermic reaction?
exothermic. the energy flows out. exothermic. the energy flows out.
Weightlessness occurs when an object applies a reaction force to another object?
false
IS it true that enzymes increase the number of collisions in a chemical reaction?
No that is false. Enzymes do NOT increase number of collisions in a chemical reaction.
Do enzymes raise the energy of activation required to initiate a reaction?
false
When an enzyme binds with its substrate the activation energy needed for the chemical reaction to occur is increased True or False?
False, enzymes lower activation energies which allow the reaction to proceed at an increased rate.
Can an enzyme make an endothermic reaction exothermic?
False. Not necessarily. Do not confuse kinetics with thermodynamics. Although an enzyme as a catalyst decreases the activation energy of the reaction, this says nothing about whether the reaction is ultimately endothermic or exothermic.
Is it true that after the product of an enzyme-catalyzed reaction leavesthe active site the enzyme can no longer react with more substrate?
False. Enzymes are reusable.
True or False Enzymes are inorganic catalysts?
False. The activation energy of the reaction remains the same. Enzymes split up the reaction pathway into fewer steps, so that less activation energy is required at each step. This allows each step to occur at a lower temperature, or more quickly at the same temperature.
Enzymes tend to raise the activation energy?
Enzymes lower the amount of activation energy required. This makes the reaction more likely to occur and speeds it up as well.
Enzymes are carbohydrates that act as catalysts in metabolic reactions true or false?
FALSE!Enzymes are PROTEINS that can act as catalysts in metabolic reactions.
Is it true that Enzymes are not consumed during a chemical reaction?
Correct. Enzymes help to speed up chemical reactions. They may speed them up, costing them some energy, but they are never used up.
Do enzymes work by providing energy to initiate reaction?
No they do not supply energy to start a chemical reaction, however energy has something to do with it. Enzymes actually lower energy barriers, in other words it reduces the activation energy needed which is the energy absorbed before the chemical reaction can start.
Catalyst are always enzyme it's true or false?
False . Catalysts can be many things ; enzymes and transition elements and their compounds , for example .So Enzymes are always catalysts but Catalysts are NOT always enzymes .
According to the second law of thermodynamics it is not possible to change heat completely into work with no other change taking place?
That is false. The two are not directly related.
