Multiple Choice
Aldoase requires Zn2+ for catalysis. Under cellular conditions of zinc deficiency, aldoase is referred to as:
6. Enzymes and Enzyme Kinetics
Cofactor
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Which of the following can serve as cofactors for enzymes?
A
Organic molecules
B
Both organic and inorganic molecules
C
Inorganic molecules
D
Only cations
Verified step by step guidance1
Understand the concept of cofactors: Cofactors are non-protein chemical compounds or metallic ions that are required for an enzyme's activity as a catalyst. They can be organic or inorganic molecules.
Differentiate between organic and inorganic cofactors: Organic cofactors are typically molecules like vitamins or coenzymes (e.g., NAD+, FAD). Inorganic cofactors are usually metal ions (e.g., Mg²⁺, Zn²⁺).
Recognize that both types of molecules can serve as cofactors: Enzymes often require either organic molecules (coenzymes) or inorganic molecules (metal ions) to function properly.
Evaluate the options provided: Organic molecules and inorganic molecules are both valid cofactors, while 'only cations' is incorrect because not all inorganic cofactors are cations.
Conclude that the correct answer is 'Both organic and inorganic molecules,' as both types are essential for enzyme functionality in various biochemical reactions.
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