Read the following statements and choose the correct option 1.Acquired immunity is characterized by memory and is pathogen-specific. 2.The primary immune response is more intense than the secondary response. 3.B-lymphocytes produce antibodies that are crucial for the humoral immune response. 4.An antibody molecule is composed of two heavy chains and two light chains, represented as H₂L₂. 5.T-lymphocytes are responsib

Step-by-step solution

Acquired immunity, on the other hand is pathogen specific. It is characterised by memory. This means when our body encounters a pathogen for the first time it produces a response called primary response which is of low intensity. Subsequent encounter with the same pathogen elicits a highly intensified secondary or anamnestic response. This is ascribed to the fact that our body appears to have memory of the first encounter. The primary and secondary immune responses are carried out with the help of two special types