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An example of feedback inhibition is...

An example of feedback inhibition is

A

Cyanide action on cytochromes

B

Sulpha drug on folic acid synthesizing bacteria

C

Allosteric inhibition of hexokinase by Glucose-6-P

D

Reaction between succinate and succinic dehydrogenase

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The correct Answer is:
B
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Which of the following is a typical example of feedback inhibition ?

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Assertion : The inhibition of activity of succinic dehydrogenase by malonate which closely resembles the substrate succinate in structure is the example of competitive inbhibition. Reason : Competitive inhibition is the inhibition of enzyme activity when inhibitor closely resembles the substrate, in its molecular structre.

MODERN PUBLICATION-BIOMOLECULES -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) (MULTIPLE CHOICE QUESTIONS (MCQs)
  1. Select the correct answer from the following, DNA can be 1. A-DNA" ...

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  2. Which of the following statements is/are not true (A) Glycerol is a ...

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  3. An example of feedback inhibition is

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  4. The haploid content of human DNA is

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  5. Which is an organic compound found in most cells Or Most common mo...

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  6. Which one of the following is ss RNA ?

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  7. Uracil is present in RNA at the place of :

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  8. The enzyme that cuts DNA is :

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  9. Which of the following be named for DNA produced from RNA ?

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  10. Quarternary structure of protein

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  11. Identify the sulphur-containing amino acid?

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  12. Which of the following carbohydrates is not a disaccharide

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  13. Enzymes that catalyse inter-conversion of optical, geometrical or posi...

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  14. The ''lock and key'' model of enzyme action illustrates that a particu...

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  15. The effectiveness of an enzyme is affected least by

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  16. Starch is a polymer of

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  17. Table sugar is

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  18. Human proteins can be produced in the milk or semen of farm animals. T...

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  19. ..................... Is a globular protein of ~ 6 kDa consisting of 5...

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  20. Select the option which is not correct with respect to enzyme action

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