An example of feedback inhibition is
A. Allosteric inhibition of hexokinase by glucose 6-phosphate
B. Cyanide action on cytochrome
C. Sulpha drug on folic acid synthesis in bacteria
D. The reaction between succinic dehydrogenase and succinic acid.

Hint: Remarks inhibition is the procedure by way of in which the stop product terminates the response in a diffused way. The accumulation of the quit product interferes with the enzymatic hobby by changing the form of its lively website online, or so that they were especially ideal.

Complete answer:
Give up product inhibition happens whilst the end made from a metabolic pathway inhibits the interest of an enzyme catalyzing a few very early reactions of the collection, which for the maximum part is quite significant. The stop product especially is the inhibitor and the enzyme genuinely inactivated simply is known as allosteric enzyme, truly contrary to popular perception. An example of comments inhibition for all intents and functions is the inhibition of the pastime of the enzyme hexokinase by using glucose 6-phosphate in glycolysis in a diffuse manner.
         This enzyme catalyzes the conversion of glucose into glucose 6-phosphate however as the response proceeds, an increase in attention of glucose 6-phosphate inhibits the interest of hexokinase, which is pretty enormous. throughout glycolysis, the glucose changes to glucose 6-phosphates in presence of hexokinase, so on converting the shape of the form of lively website online, the substrate does now not attach to the active website online and hence the response terminates, or so that the idea.

Hence, the correct answer is option A. Allosteric inhibition of hexokinase by glucose 6-phosphate is the example of feedback inhibition.

Note:
Whilst the amount of glucose 6 phosphate exceeds it deactivate hexokinase, displaying how remarks inhibition or give up product inhibition takes place while the stop product of a metabolic pathway inhibits the hobby of an enzyme catalyzing some early reactions of the series in a mainly main manner.