Question

The major difference between humoral immunity and cell-mediated immunity is that:

• A. humoral immunity is non-specific, whereas cell-mediated immunity is specific for particular antigens
• B. the agents of humoral immunity are carried in the bloodstream, whereas the cells of the latter are concentrated in lymph nodes
• C. humoral immunity cannot function independently; it is always activated by cell-mediated immunity
• D. humoral immunity acts against free-floating antigens, whereas cell-mediated immunity works against pathogens that. have entered body cells

Answer 1

The correct option is D humoral immunity acts against free-floating antigens, whereas cell-mediated immunity works against pathogens that. have entered body cells

The immune system has two divisions-humoral immunity and cell-mediated immunity. The humoral immunity protects against extracellular pathogens while the cell-mediated immunity protects against intracellular pathogens.

so, the correct option is 'humoral immunity acts against free-floating antigens, whereas cell-mediated immunity works against pathogens that have entered body cells'.