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Innate and Adaptive Immunity

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Questions and Answers

What is the first step in cell-mediated response?

The infected cell breaks up into fragments
Phagocytic cells consume the infected cells
The T cell secretes a pore-forming protein
The T cell recognizes and binds to infected cells (correct)

What is the role of activated B cells?

They recognize the invader
They produce antibodies to fight the invader (correct)
They get activated by the T cell
They stimulate active T cells

What is the function of vaccines?

To produce antibodies
To introduce a weakened or inactivated pathogen to the body (correct)
To stimulate a cell-mediated response
To infect the body with a pathogen

What is the role of igE antibodies?

To fight parasitic worms (C) Signup and view all the answers

What is the cause of AIDS?

The attack on T cells (B) Signup and view all the answers

What is the effect of T cells in Type 1 diabetes?

They destroy insulin-producing cells (B) Signup and view all the answers

What is the primary function of histamine secretion by a mass cell?

To increase blood vessel permeability and facilitate immune cell migration (A) Signup and view all the answers

What is the primary mechanism by which neutrophils remove pathogens?

Phagocytosis (D) Signup and view all the answers

What is the primary function of T cells in the adaptive immune response?

To recognize and kill infected host cells (A) Signup and view all the answers

What is the primary role of dendritic cells in activating T cells?

To phagocytose antigens and break them down into peptide fragments (B) Signup and view all the answers

What is the clonal selection theory primarily concerned with?

The activation and cloning of lymphocytes that recognize specific antigens (B) Signup and view all the answers

What is the primary characteristic of adaptive immune responses that allows them to recognize a limitless number of antigens?

Diversity (A) Signup and view all the answers

What is the primary function of toll-like receptors (TLRs)?

To recognize specific pathogens and activate an immune response (C) Signup and view all the answers

What is the role of macrophages in the immune response?

To produce chemokines and recruit immune cells to the wound site (A) Signup and view all the answers

What is the primary difference between innate and adaptive immunity?

Innate immunity is faster and broader, while adaptive immunity is slower and more specific (C) Signup and view all the answers

What is the role of histamine in the inflammatory response?

It causes blood vessels to dilate and increase blood flow to the wound site (B) Signup and view all the answers

What is the primary function of chemokines in the inflammatory response?

To recruit immune cells to the wound site and promote inflammation (B) Signup and view all the answers

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 (C) Signup and view all the answers

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