Question

Distinguish between innate and acquired immunity.

Hint:

Think of Innate immunity as the "built-in" security system and Acquired immunity as the "learned" defense system that recognizes specific enemies.

Answer 1

Step 1: Innate Immunity - It is a non-specific type of defense that is present at the time of birth. It consists of four types of barriers: physical, physiological, cellular, and cytokine barriers.
Step 2: Acquired Immunity - It is pathogen-specific and is characterized by memory. It is acquired by the body after birth upon exposure to pathogens.
Step 3: Key Difference - Innate immunity provides immediate but general protection, while acquired immunity involves a primary and secondary response mediated by B-lymphocytes and T-lymphocytes.