Question

Minerals associated with redox reactions are

• A. Na, Cu
• B. N, Cu
• C. Fe, Cu
• D. Ca, Fe

Answer 1

Answer: (C)

$Fe$ is an important constituent of proteins like ferredoxin and cytochromes which are involved in transfer of electrons. It is reversibly oxidised from $F{e}^{2+}$ to $F{e}^{3+}$ during electron transfer. It activates catalase enzyme and is essential for the formation of chlorophyll,
Copper helps in formation of starch. It is required for the overall metabolism in plants. It is associated with certain enzymes involved in redox reactions and is reversibly oxidised from $C{u}^{+}$ to $C{u}^{2+}$.