Question

The primary immune response O occurs when memory cells are stimulated O has a lag period while B cells proliferate and differentiate into plasma cells O occurs more rapidly and is stronger than the secondary response O is another name for immunological memory

Answer 1

The answer will be it has a lag period while B cells proliferate & differentiate into plasma cells (second option).

Explanation: Primary immune response occurs when an antigen type is first encountered by the immune system of the body. In secondary immune response, memory cells are stimulated. So, we can ignore first option. Secondary immune response is stronger & faster than primary immune response. So, we can ignore third option. During secondary immune response immune system acts based on the immunological memory. Thus, immunological memory is another name for secondary immune response. So, we can ignore last option. During primary immune response, there is a lag period (5-7 days) during which B cells differentiate into plasma cells for more robust immune response in future. Thus, correct answer will be second option.