18 Questions
What is the first step in cell-mediated response?
The T cell recognizes and binds to infected cells
What is the role of activated B cells?
They produce antibodies to fight the invader
What is the function of vaccines?
To introduce a weakened or inactivated pathogen to the body
What is the role of igE antibodies?
To fight parasitic worms
What is the cause of AIDS?
The attack on T cells
What is the effect of T cells in Type 1 diabetes?
They destroy insulin-producing cells
What is the primary function of histamine secretion by a mass cell?
To increase blood vessel permeability and facilitate immune cell migration
What is the primary mechanism by which neutrophils remove pathogens?
Phagocytosis
What is the primary function of T cells in the adaptive immune response?
To recognize and kill infected host cells
What is the primary role of dendritic cells in activating T cells?
To phagocytose antigens and break them down into peptide fragments
What is the clonal selection theory primarily concerned with?
The activation and cloning of lymphocytes that recognize specific antigens
What is the primary characteristic of adaptive immune responses that allows them to recognize a limitless number of antigens?
Diversity
What is the primary function of toll-like receptors (TLRs)?
To recognize specific pathogens and activate an immune response
What is the role of macrophages in the immune response?
To produce chemokines and recruit immune cells to the wound site
What is the primary difference between innate and adaptive immunity?
Innate immunity is faster and broader, while adaptive immunity is slower and more specific
What is the role of histamine in the inflammatory response?
It causes blood vessels to dilate and increase blood flow to the wound site
What is the primary function of chemokines in the inflammatory response?
To recruit immune cells to the wound site and promote inflammation
What is the primary difference between neutrophils and macrophages?
Neutrophils and macrophages are both phagocytic cells that kill pathogens, but macrophages also send chemical signals to immune response cells
This quiz covers the basics of innate and adaptive immunity, including their differences in response to pathogens, recognition, and impact on animals. Learn about the role of leukocytes and how pathogens adapt to overcome barriers.
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