Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Transition metals are key components of many enzymatic and non-enzymatic catalysts.
Reason (R) : Iron is the only transition metal in seafood

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
• C. (A) is true but (R) is false.
• D. (A) is false but (R) is true.

Hint:

Be cautious of restrictive terms like "only" in competitive exams, as they are often scientifically incorrect.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
This question evaluates the biochemical roles and abundance of essential transition metals present in seafood.

Step 2: Detailed Explanation:
Assertion (A) is true: Many transition metals serve as critical cofactors in enzymatic systems (e.g., iron in hemoglobin/cytochromes, copper in cytochrome c oxidase) and act as non-enzymatic catalysts in lipid oxidation.
Reason (R) is false: Seafood contains multiple transition metals, not just iron.
Other essential transition metals found in seafood include zinc (\(Zn\)), copper (\(Cu\)), manganese (\(Mn\)), and cobalt (\(Co\)).

Step 3: Final Answer:
Because (A) is true but (R) is false, the correct option is (C).