Animal Immune System
Biology ⇒ Animal Biology
Animal Immune System starts at 10 and continues till grade 12.
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See sample questions for grade 11
Describe how inflammation helps the body fight infection.
Describe the main difference between humoral and cell-mediated immunity.
Describe the role of dendritic cells in the immune system.
Describe the role of the major histocompatibility complex (MHC) in the immune response.
Explain how the immune system prevents repeated infections by the same pathogen.
Explain the difference between primary and secondary immune responses.
A patient is born with a genetic defect that prevents the production of functional T cells. Predict and explain the consequences this would have on both humoral and cell-mediated immunity.
A researcher observes that a certain animal species lacks lymph nodes but still mounts effective immune responses. Suggest alternative structures or mechanisms that might compensate for the absence of lymph nodes in this species.
Which of the following best describes an antigen?
(1) A type of white blood cell
(2) A molecule that triggers an immune response
(3) A protein produced by B cells
(4) A chemical that destroys pathogens
Which of the following best describes an autoimmune disease?
(1) The immune system fails to respond to pathogens
(2) The immune system attacks the body’s own tissues
(3) The immune system overreacts to harmless substances
(4) The immune system is suppressed by drugs
Which of the following best describes the function of the complement system?
(1) Produces antibodies
(2) Enhances the ability of antibodies and phagocytic cells to clear microbes
(3) Suppresses immune response
(4) Produces histamine
Which of the following best describes the role of helper T cells?
(1) Produce antibodies
(2) Kill infected cells directly
(3) Activate other immune cells
(4) Suppress immune response
Fill in the blank: _______ are proteins that help other cells resist viral infection by interfering with viral replication.
Fill in the blank: _______ immunity is achieved when an individual is exposed to a pathogen and produces their own antibodies.
Fill in the blank: The _______ is the largest lymphatic organ in the body and helps filter blood.
Fill in the blank: The class of antibodies most abundant in blood and extracellular fluid is _______.
True or False: All animals possess both innate and adaptive immune systems.
True or False: All vertebrates have both innate and adaptive immune systems.
True or False: Cytotoxic T cells destroy infected cells by releasing perforin and granzymes.
True or False: Fever is a systemic response that can help inhibit the growth of pathogens.
