Question

Adaptive immunity has the following features except ____________

   A.  
It develops immunologic memory

   B.  
it is characterized by both local and systemic effects

   C.  
it is activated in lymph nodes

   D.  
the response involves interactions with T cells

   E.  
all of these events occur

Answer 1

E. All of these events occur

EXPLANATION

Adaptive immunity is divided into cell mediated immunity and humoral immunity. Cell mediated immunity is taking place with the help of T cells and humoral immunity is taking place with the help of B cells. When APC present antigen to the naive T cell it gets subdivided and converted to Memory T cells. It has the ability to memorize the attack by the pathogen. So when the next attack by the same pathogen comes the memory T cells comes to play. Adaptive immunity has both local and systemic effects. It is activated in lymph nodes. In lymph nodes the neutrophils, macrophages and dendritic cells are present, they try to kill the pathogenic organism and try to activate adaptive immunity. As I have mentioned earlier Tcells take part in cell mediated immunity, which is a part of adaptive immunity.