Match the following lists.

List - I (A mineral component of)		List - II (Mineral function)
(A)	Ferredoxin	(I)	Redox reactions
(B)	Plastocyanin	(II)	Maintains ribosome structure
(C)	Middle lamellae	(III)	Stabilizes protein structure
(D)	Chlorophyll	(IV)	Formation of mitotic spindle

The correct answer is

The correct answer is Option 2.

Key Points

• Ferredoxin is associated with redox reactions, as it plays a key role in electron transfer, particularly during photosynthesis in plants.
• Plastocyanin contains copper and is involved in electron transfer during the light-dependent reactions of photosynthesis.
• Middle lamellae is primarily made of calcium pectate and serves to cement adjacent plant cells together, maintaining structural integrity.
• Chlorophyll contains magnesium at its core, which is essential for photosynthesis, allowing absorption of light energy.
• Matching the components to their functions: (A) - (I), (B) - (I), (C) - (II), (D) - (III).

Additional Information

• Ferredoxin:
  • It is an iron-sulfur protein that mediates electron transfer in various metabolic reactions.
  • In photosynthesis, it transfers electrons from photosystem I to NADP+ reductase.
  • It plays a role in nitrogen fixation in certain bacteria.
• Plastocyanin:
  • A copper-containing protein involved in the electron transport chain of photosynthesis.
  • It transfers electrons between cytochrome b6f complex and photosystem I.
  • It is crucial for maintaining the flow of electrons during the light-dependent reactions.
• Middle Lamellae:
  • It is the first layer formed during cell division, lying between the primary walls of adjacent plant cells.
  • Composed mainly of pectins, it helps in cell adhesion and structural stability.
• Chlorophyll:
  • A green pigment found in plants, algae, and cyanobacteria.
  • Magnesium is the central atom in the chlorophyll molecule, critical for light absorption.
  • It captures light energy to drive photosynthesis by converting it into chemical energy.