The concentration of an enzyme within a cell is extremely low relative to other

Question

The concentration of an enzyme within a cell is extremely low relative to other material present, yet functions effectively in its metabolic role. How can an enzyme function and never seem to run out? Name four factors which affect the activity of an enzyme. A chemist found that a reaction did not take place under any set of conditions. If the chemist added a catalyst, would the reaction then occur? Explain your answer. The rate of an enzyme-catalyzed reaction usually increases with temperature, but then decreases after reaching the "optimal temperature." Why does this take place? Why does saliva hydrolyze starch in the mouth but not in the stomach? For a given enzyme-catalyzed reaction, on a molar basis, substrate concentration increases from two to four times the enzyme concentration (double). Would the rate of the reaction also double? Explain your answer.

Explanation / Answer

1) Enzymes are catalysts which  increase the reaction rate by lowering its activation energy. Catalyst, is not consumed in the reaction. Which regenerate in the process of catalyst so very small amount is needed.

2) Tempratue, pH, Enzyme concentration, Substrate concentration

3) A catalyst fnds an alternate pathway for the reaction where only lower amount of activation energy is needed. A reaction that requires millions of years to takeplace can happen in milliseconds in the presence of a catalyst. So a reaction that doesn't takeplace at any conditions can takeplace in the presence of a catalyst

4) Enzymes are proteins which will denature above the optimal temprature, so the rate pf reaction goes down.

5) Amylase enzyme found in the saliva is responsible for this conversion. Amylase enzyme is not produced in stomach so there starch hydrolysis doesn't takeplace

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