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Discuss the factors that influence the c...

Discuss the factors that influence the catalytic activity of enxymes.

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Factors influencing the catalytic activity of enzymes :
`to` Highly specific nature: One catalyst catalyses only one reaction. Each enzyme is specific for a given reaction.
Eg : The enzyme urease catalyses the hydrolysis of urea only and not any other arts
`to` Highly active under optlmum temperature: The rate of an enzyme reaction is maximum at a temperature called optimum temperature.
`to` The optimum temperature range for enzymatic activity is 298 - 310 K.
`to` Highly active under optimum pH : The rate of an enzyme - catalysed reaction is maximum at a particular pH called optimum pH which lies between 5 - 7.
`to` Increasing activity in presence of activators and co-enzymes : The enzymatic activity is increased in presence of co-enzymes (or) presence of activators such as `Na^(+)` , `Mn^(+2)` etc.,
`to` Influence of inhibitors and poisions : The inhibitors (or) poisons interact with the active functional groups on the enzymes surface and reduce or completely destroy the catalytic activity.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-SURFACE CHEMISTRY-SHORT ANSWER QUESTIONS
  1. Discuss some features of catalysis by zeolites.

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  2. Give brief account of mechanism of enzyme catalysis with suitable diag...

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  3. Discuss the factors that influence the catalytic activity of enxymes.

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  4. Name any six enzyme catalysed reaction.

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  5. What do you mean by activity and selectivity of catalyst ?

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  6. How are colloids classified on the basis of physical states of compone...

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  7. How are colloids classified on the basis of nature of the dispersion ...

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  8. How are colloids classified on the basis of interaction between dispe...

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  9. What is the difference between a colloidal sol, get, emulsion and a fo...

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  10. What are lyophilic and lyophobic sols ? Give one example for each type...

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  11. Name a substance whose molecules consist of lyophilic as well as lyoph...

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  12. Describe Bredig's arc method of preparation of colloids with a neat di...

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  13. Name any four examples of preparation of colloids by chemical methods ...

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  14. Describe the purification of colloidal solution by the phenomenon of d...

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  15. Explain the formation of micelles with a neat sketch.

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  16. Action of soap is due to emulsification and micelle formation. Comment...

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  17. Explain the phenomenon of Brownian movement giving reasons for the occ...

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  18. Name the four positively charged sols.

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  19. Name the four negatively charged sols.

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  20. Explain the terms helmholtz electrical double layer and zeta potential...

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