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An example of competitive inhibition of an enzyme is the inhibition of _____________.Question 36Answera.succinic dehydrogenase by malonic acidb.cytochrome oxidase by cyanidec.carbonic anhydrase by carbon dioxided.hexokinase by glucose-6-phosphate

Question

An example of competitive inhibition of an enzyme is the inhibition of _____________.Question 36Answera.succinic dehydrogenase by malonic acidb.cytochrome oxidase by cyanidec.carbonic anhydrase by carbon dioxided.hexokinase by glucose-6-phosphate

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Solution

The example of competitive inhibition of an enzyme is the inhibition of succinic dehydrogenase by malonic acid.

Here's the step by step explanation:

  1. Competitive inhibition is a type of enzyme inhibition where the inhibitor, which is similar in structure to the substrate, competes with the substrate for binding to the active site of the enzyme.

  2. In the case of succinic dehydrogenase, the substrate is succinate, a molecule involved in the citric acid cycle.

  3. Malonic acid is structurally similar to succinate, so it can bind to the active site of succinic dehydrogenase, preventing succinate from binding and thus inhibiting the enzyme's function.

  4. This is a classic example of competitive inhibition because malonic acid directly competes with succinate for the active site of the enzyme.

So, the correct answer is a. succinic dehydrogenase by malonic acid.

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