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easyMCQNEET 20232026Biology
1 mark

Given below are two statements:Statement I: Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.Statement II: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.In the light of the above statements, choose the correct answer:

  1. A
    Both Statements I and II are true
  2. B
    Both statements I and II are false
  3. C
    Statement I is true but Statement II is false
  4. D
    Statement I is false, but Statement II is true

Solution & Step-by-step Explanation

Statement I is true: Enzymes have an optimal temperature; cold inactivates while heat denatures them.Statement II is true: This describes the mechanism of competitive inhibition (e.g., malonate and succinate).Both are accurate.

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Given below are two statements:Statement I: Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.Statement II: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.In the light of the above statements, choose the correct answer:
A
Both Statements I and II are true
B
Both statements I and II are false
C
Statement I is true but Statement II is false
D
Statement I is false, but Statement II is true

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cell biologyenzymes

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