Which of the following statements is not true about enzymes?*
A. Enzymes are biological catalysts
B. Enzymes as catalysts lowers the activation energy thus, speeds up the rate of reaction
C. Enzymes are proteins
D. Enzymes are highly specific
E. None of the given options
The Correct Answer and Explanation is :
The correct answer is E. None of the given options provide the correct answer.
All of the other options (A, B, C, and D) are true statements about enzymes:
- A. Enzymes are biological catalysts: This is true. Enzymes are proteins that function as catalysts in biological reactions, meaning they speed up chemical reactions without being consumed in the process.
- B. Enzymes as catalysts lower the activation energy thus, speeding up the rate of reaction: This is also correct. Enzymes reduce the activation energy required for a chemical reaction to occur, which allows reactions to proceed more quickly at lower temperatures.
- C. Enzymes are proteins: This is true. Most enzymes are proteins, although some RNA molecules can also function as catalysts (ribozymes). However, the vast majority of enzymes are indeed protein-based.
- D. Enzymes are highly specific: This is correct as well. Enzymes exhibit specificity, meaning they usually catalyze only one type of reaction or work on a specific substrate due to the unique shape of their active site, which interacts with the substrate.
Since all of the statements except for E are accurate, the correct response is E, which implies that all the provided statements are true.