185590
Enzyme catalyzed reactions can be inhibited by
1 \(\mathrm{Zn}^{2+}\)
2 \(\mathrm{Mg}^{2+}\)
3 \(\mathrm{Hg}^{2+}\)
4 \(\mathrm{Cu}^{2+}\)
Explanation:
Exp: C Mercury inhibits glucose-6- phosphatase, enzyme is involved in production of glucose in cells. It also inhibits many enzymes involved in digestion of food molecule.
Uttarakhand PMT-2011
Biomolecules
185591
An example of non-competitive inhibition is
1 The inhibition of succinic dehydrogenase by malonate
2 Cyanide action on cytochrome oxidase
3 Sulpha drug on folic acid synthesizing bacteria
4 The inhibition of hexokinase by glucose 6-phosphate
5 Reaction of succinic dehydrogenase
Explanation:
Exp: B Non-competitive inhibition is a type of inhibition where, inhibitor has no structural similarity with substrate and bind with the enzyme at different site other than the active site. Example of non competitive inhibition is cyanide action on cytochrome oxidase..
Kerala PMT-2009
Biomolecules
185592
Which is a typical example of 'feedback inhibition?
1 Cyanide and cytochrome reaction
2 Sulpha drugs and folic acid synthesizer bacteria
3 Allosteric inhibition of hexokinase by glucose 6-phosphate
4 Reaction between succinic dehydrogenase and succinic acid
Explanation:
Exp: C Allosteric inhibition of hexokinase by glucose 6-phosphate. It is a typical example of feedback inhibition. In glycolysis, the glucose, changes to glucose-6-phosphate in presence of hexokinase. When amount of glucose-6-phosphate exceeds it deactivate hexokinase.
185590
Enzyme catalyzed reactions can be inhibited by
1 \(\mathrm{Zn}^{2+}\)
2 \(\mathrm{Mg}^{2+}\)
3 \(\mathrm{Hg}^{2+}\)
4 \(\mathrm{Cu}^{2+}\)
Explanation:
Exp: C Mercury inhibits glucose-6- phosphatase, enzyme is involved in production of glucose in cells. It also inhibits many enzymes involved in digestion of food molecule.
Uttarakhand PMT-2011
Biomolecules
185591
An example of non-competitive inhibition is
1 The inhibition of succinic dehydrogenase by malonate
2 Cyanide action on cytochrome oxidase
3 Sulpha drug on folic acid synthesizing bacteria
4 The inhibition of hexokinase by glucose 6-phosphate
5 Reaction of succinic dehydrogenase
Explanation:
Exp: B Non-competitive inhibition is a type of inhibition where, inhibitor has no structural similarity with substrate and bind with the enzyme at different site other than the active site. Example of non competitive inhibition is cyanide action on cytochrome oxidase..
Kerala PMT-2009
Biomolecules
185592
Which is a typical example of 'feedback inhibition?
1 Cyanide and cytochrome reaction
2 Sulpha drugs and folic acid synthesizer bacteria
3 Allosteric inhibition of hexokinase by glucose 6-phosphate
4 Reaction between succinic dehydrogenase and succinic acid
Explanation:
Exp: C Allosteric inhibition of hexokinase by glucose 6-phosphate. It is a typical example of feedback inhibition. In glycolysis, the glucose, changes to glucose-6-phosphate in presence of hexokinase. When amount of glucose-6-phosphate exceeds it deactivate hexokinase.
185590
Enzyme catalyzed reactions can be inhibited by
1 \(\mathrm{Zn}^{2+}\)
2 \(\mathrm{Mg}^{2+}\)
3 \(\mathrm{Hg}^{2+}\)
4 \(\mathrm{Cu}^{2+}\)
Explanation:
Exp: C Mercury inhibits glucose-6- phosphatase, enzyme is involved in production of glucose in cells. It also inhibits many enzymes involved in digestion of food molecule.
Uttarakhand PMT-2011
Biomolecules
185591
An example of non-competitive inhibition is
1 The inhibition of succinic dehydrogenase by malonate
2 Cyanide action on cytochrome oxidase
3 Sulpha drug on folic acid synthesizing bacteria
4 The inhibition of hexokinase by glucose 6-phosphate
5 Reaction of succinic dehydrogenase
Explanation:
Exp: B Non-competitive inhibition is a type of inhibition where, inhibitor has no structural similarity with substrate and bind with the enzyme at different site other than the active site. Example of non competitive inhibition is cyanide action on cytochrome oxidase..
Kerala PMT-2009
Biomolecules
185592
Which is a typical example of 'feedback inhibition?
1 Cyanide and cytochrome reaction
2 Sulpha drugs and folic acid synthesizer bacteria
3 Allosteric inhibition of hexokinase by glucose 6-phosphate
4 Reaction between succinic dehydrogenase and succinic acid
Explanation:
Exp: C Allosteric inhibition of hexokinase by glucose 6-phosphate. It is a typical example of feedback inhibition. In glycolysis, the glucose, changes to glucose-6-phosphate in presence of hexokinase. When amount of glucose-6-phosphate exceeds it deactivate hexokinase.
