Question

Match List-I with List-II.
List-I
A. Lysozyme
B. Immunoglobulins
C. Lactoferrin
D. Lactoperoxidase
List-II
I. Component of non-immune host defence antimicrobial system
II. Prevents microbial growth by binding iron
III. Major role in antibody mediated immune protection
IV. Antibacterial enzyme in primary immune system
Choose the correct answer.

• A. A-IV, B-III, C-II, D-I
• B. A-I, B-II, C-III, D-IV
• C. A-II, B-III, C-I, D-IV
• D. A-IV, B-II, C-III, D-I

Hint:

Lactoferrin = iron binding → inhibits microbes.

Answer 1

The Correct Option is A

Concept: Milk contains several antimicrobial proteins contributing to immune defense.

Step 1: Lysozyme.

• Enzyme that breaks bacterial cell walls
• Acts as antibacterial enzyme

Step 2: Immunoglobulins.

• Provide antibody-mediated immunity

Step 3: Lactoferrin.

• Binds iron making it unavailable to bacteria

Step 4: Lactoperoxidase.

• Part of non-immune antimicrobial system

Step 5: Matching.
\[ A \rightarrow IV,\quad B \rightarrow III,\quad C \rightarrow II,\quad D \rightarrow I \] Conclusion: Option (1) correct.