Which features differentiate the adaptive and innate immune system?1 pointThe adaptive immune system has a "memory" of a previous encounter with a pathogen.Only the adaptive immune system is responsible for killing pathogens.Only the innate system responds to a specific pathogen antigen.The innate system has molecular products for pathogen control and adaptive system has only cells.

The innate and adaptive immune systems are differentiated by several key features:

1. Specificity: The innate immune system responds to pathogens in a generic way. It does not differentiate between different types of pathogens. On the other hand, the adaptive immune system is highly specific. It recognizes and targets specific pathogens based on their unique antigens.

2. Memory: The adaptive immune system has the ability to "remember" previous encounters with a pathogen. This means that it can respond more quickly and effectively to subsequent encounters with the same pathogen. The innate immune system does not have this memory capability.

3. Response time: The innate immune system responds immediately to pathogens, while the adaptive immune system takes time to develop a targeted response.

4. Cells involved: Both systems use different types of cells. The innate immune system primarily uses phagocytes, natural killer cells, and dendritic cells, while the adaptive immune system primarily uses T cells and B cells.

5. Pathogen control: The innate immune system uses molecular products like antimicrobial peptides, complement proteins, and cytokines for pathogen control. The adaptive immune system, on the other hand, relies on the actions of its specialized cells to control pathogens.