Question

When an antigen attacks the body, it activates adaptive immunity. This adaptive immunity produces a strong response when it encounters the same antigen for the second time. Which feature of adaptive immunity is essential for this kind of response?
the ability to remember the antigen it encounters
the ability to distinguish between self and nonself antigens
the ability to produce nonspecific antibodies against the foreign antigen
the ability to secrete lysozymes against pathogenic antigens

Answer 1

Answer:

Option). the ability to remember the antigen it encounters

Explanation:

The adaptive or acquired immunity is a type of immunity, which develops by the exposure of pathogens during lifetime. Four features of adaptive immunity includes specificity, diversity, memory, and ability to differentiate between self and non-self.

Cells of adaptive immunity (B cells and T cells) are specific for pathogens. Once the antigens or their components are recognized by pathogens, these cells produce effector cells and memory cells.

These are the memory cells that remember the antigens and provide a rapid and more efficient response during subsequent encounters of those antigens.

Thus, the correct answer is first option.

Answer 2

Answer:

A.the ability to remember the antigen it encounters

Explanation:

PLATO