Question

multiple select question

select all that apply

what can act as cofactors?

coenzymes
metal ions
dna and rna
small organic molecules
lipids
enzymes

Explanation:

Define cofactors and their categories

$$ \text{Cofactors} = \text{Inorganic metal ions} \cup \text{Organic molecules (Coenzymes)} $$

Evaluate the given options

• Coenzymes: Organic cofactors (Correct)
• Metal ions: Inorganic cofactors, such as \(Fe^{2+}\), \(Mg^{2+}\), \(Zn^{2+}\) (Correct)
• DNA and RNA: Nucleic acids, not cofactors (Incorrect)
• Small organic molecules: Coenzymes are small organic molecules that act as cofactors (Correct)
• Lipids: Structural/energy macromolecules, not cofactors (Incorrect)
• Enzymes: Proteins that require cofactors, not cofactors themselves (Incorrect)

Answer:

• Coenzymes (Correct answer)
• Metal ions (Correct answer)
• DNA and RNA
• Small organic molecules (Correct answer)
• Lipids
• Enzymes