Question

The incorrect statements regarding enzymes are
(A) Enzymes are biocatalysts.
(B) Enzymes are non-specific and can catalyse different kinds of reactions.
(C) Most Enzymes are globular proteins.
(D) Enzyme - oxidase catalyses the hydrolysis of maltose into glucose.
Choose the correct answer from the option given below:

• A. (B) and (C)
• B. (B), (C) and (D)
• C. (B) and (D)
• D. (A), (B) and (C)

Answer 1

The Correct Option is C

To determine the incorrect statements regarding enzymes, let's evaluate each statement:

1. Statement A: Enzymes are biocatalysts.
   This statement is correct. Enzymes are biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.
2. Statement B: Enzymes are non-specific and can catalyse different kinds of reactions.
   This statement is incorrect. Enzymes are highly specific, meaning each enzyme typically catalyses only one particular type of reaction or acts on a specific substrate due to the unique shape of its active site.
3. Statement C: Most Enzymes are globular proteins.
   This statement is correct. Enzymes are mainly composed of globular proteins that have complex three-dimensional structures essential for their catalytic activities.
4. Statement D: Enzyme - oxidase catalyses the hydrolysis of maltose into glucose.
   This statement is incorrect. Oxidases are enzymes that catalyse oxidation-reduction reactions, not hydrolysis. The enzyme that catalyses the hydrolysis of maltose into glucose is maltase, not oxidase.

Based on the evaluation above, the incorrect statements are (B) and (D). 
Therefore, the correct answer is: (B) and (D)

Answer 2

Statement (A) is correct because enzymes function as biocatalysts, accelerating biochemical reactions.

Statement (B) is incorrect because enzymes are specific in their action and typically catalyze only particular types of reactions.

Statement (C) is correct as most enzymes are indeed globular proteins.

Statement (D) is incorrect because oxidase enzymes do not catalyze the hydrolysis of maltose into glucose; instead, they are involved in oxidation-reduction reactions.

Thus, the incorrect statements are (B) and (D).