5. Main function of antibodies is against A.Unfavourable environment B.During deficiency of nutrient C.infection D.None of the above
Answer: Option C Solution: Antibodies contribute to immunity in three ways: preventing pathogens from entering or damaging cells by binding to them (neutralization); stimulating removal of pathogens by macrophages and other cells by coating the pathogen (opsonization); and triggering destruction of pathogens by stimulating other immune responses.