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How the presence of an enzyme affects th...

How the presence of an enzyme affects the activation energy of a reaction?

A

It becomes increased

B

It becomes decreased

C

It is first increased and then decreased

D

Activation energy in not affected at all

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The correct Answer is:
B
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Activation energy of the reaction is :

At 227^(@)C , the presence of catalyst causes the activation energy of a reaction to decrease by 4.606 K cal. The rate of the reaction will be increased by : -

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MOTION-RESPIRATION IN PLANTS -EXERCISE -1
  1. Which of the following coenzyme is a derivative of pantothenic acid (v...

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  2. Which of the following is not consumed in a biochemical process?

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  3. How the presence of an enzyme affects the activation energy of a react...

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  4. inhibition of succinate dehydrogenase by malonate is an example of

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  5. Enzyme inhibition caused by a substrate analogue is

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  6. At boiling temperature an enzyme is

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  7. Enzymes have a very narrow optima for

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  8. Substrate level net gain of ATP molecules during complete oxidation of...

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  9. How many net ATP generates in aerobic respiration via glycerol phospha...

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  10. There is gain of how many ATP in aerobic respiration of eukaryotic cel...

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  11. Cyanide resistant respiration is found in

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  12. Direct gain of ATP from one molecule of glucose during glycolysis or E...

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  13. Which enzyme is chemically not a protein?

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  14. Which enzyme break downs the fructose-1, 6Diphosphate ?

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  15. Acceptor of acetyl Co-A in Kreb's cycle is

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  16. Exnzyme concerned with the transfer of electrons is

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  17. Anaerobic respiration takes place in

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  18. During the formation of bread, it becomes porous due to release of CO(...

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  19. Allosteric enzymes have allosteric sites for

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  20. Substrate concentation at which an enzyme attains half its maximum vel...

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