If there are 6 reactions in a metabolic pathway, you would expect to find ____ d
ID: 11707 • Letter: I
Question
If there are 6 reactions in a metabolic pathway, you would expect to find ____ different enzymes involved in catalyzing reactions in this pathway.a. 2
b. 4
c. 6
d. 8
e. 12
Enzymes in enzyme-catalyzed reactions:
A. provide energy so the reaction can occur at lower temperatures
B. are changed by the reaction they catalyze
C. can cause reactions to occur that would not occur without the enzyme
D. allow reactions that would occur without the enzyme to occur at a lower temperature than they would without the enzyme.
Why does adding an acid stop enzyme-catalyzed reactions?
A. the acid prevents the enzyme from providing energy to the system so the reaction cannot occur
B. the acid binds to the substrate preventing the substrate from binding to the functional active site of the enzyme
C. the acid adds energy to the system
D. for the enzyme we are using, the acid destroys the shape of the enzyme. Without the proper shape, the enzyme cannot catalyze the reaction
I put 3 answers down and apparently the system tells me I am getting one question wrong. Can you tell me what you think? I would be even more please if you could explain briefly why, but it isn't that necessary.
Explanation / Answer
If there are 6 reactions in a metabolic pathway, you would expect to find ____ different enzymes involved in catalyzing reactions in this pathway.c. 6
This answer holds true if all the 6 reactions are different. Some reactions use enzymes like dehydrogenase and isomerases. IF there is more than one dehydrogenase reaction in the metabolic pathway, the same enzyme may be used twice.
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Enzymes in enzyme-catalyzed reactions:
A. provide energy so the reaction can occur at lower temperatures Catalysts reduce the energy of activation so that the reaction needs lesser energy than a reaction without a catalyst. ------------------------------------------------------------------ Why does adding an acid stop enzyme-catalyzed reactions?
D. for the enzyme we are using, the acid destroys the shape of the enzyme. Without the proper shape, the enzyme cannot catalyze the reaction
The acid can denature the enzyme which is usually a protein. This denaturation forces the protein into its primary structure. Due to this change, the active site of the enzyme is lost and the reaction cannot continue. Catalysts reduce the energy of activation so that the reaction needs lesser energy than a reaction without a catalyst. ------------------------------------------------------------------ Why does adding an acid stop enzyme-catalyzed reactions?
D. for the enzyme we are using, the acid destroys the shape of the enzyme. Without the proper shape, the enzyme cannot catalyze the reaction
The acid can denature the enzyme which is usually a protein. This denaturation forces the protein into its primary structure. Due to this change, the active site of the enzyme is lost and the reaction cannot continue.