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MCQ on Immunity

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Which type of immunity is present at birth and provides non-specific defense against pathogens?
A) Innate immunity
B) Adaptive immunity
C) Active immunity
D) Passive immunity
Answer: A) Innate immunity

Which cells are responsible for antibody production in the body?
A) B cells
B) T cells
C) Natural killer cells
D) Macrophages
Answer: A) B cells

What type of immunity results from vaccination?
A) Innate immunity
B) Passive immunity
C) Active immunity
D) Adaptive immunity
Answer: C) Active immunity

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Which type of immunity results from the transfer of antibodies from one individual to another?
A) Innate immunity
B) Passive immunity
C) Active immunity
D) Adaptive immunity
Answer: B) Passive immunity

Which cells are responsible for cell-mediated immunity in the body?
A) B cells
B) T cells
C) Natural killer cells
D) Macrophages
Answer: B) T cells

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Which type of immunity is specifically targeted against a particular pathogen?
A) Innate immunity
B) Adaptive immunity
C) Active immunity
D) Passive immunity
Answer: B) Adaptive immunity

What is the name of the protein molecules that identify foreign substances in the body and trigger an immune response?
A) Antibodies
B) Antigens
C) Cytokines
D) Histamines
Answer: B) Antigens

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Which type of T cell is responsible for killing virus-infected cells in the body?
A) Helper T cells
B) Memory T cells
C) Cytotoxic T cells
D) Regulatory T cells
Answer: C) Cytotoxic T cells

Which type of immunity is responsible for preventing the reoccurrence of an infection with the same pathogen?
A) Innate immunity
B) Passive immunity
C) Active immunity
D) Adaptive immunity
Answer: D) Adaptive immunity

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What is the name of the process by which B cells mature and develop specificity for a particular antigen?
A) Clonal expansion
B) Clonal selection
C) Clonal deletion
D) Clonal variation
Answer: B) Clonal selection

Which type of immunity is involved in allergic reactions?
A) Innate immunity
B) Passive immunity
C) Active immunity
D) Adaptive immunity
Answer: D) Adaptive immunity

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Which type of immunity is involved in rejection of transplanted organs?
A) Innate immunity
B) Passive immunity
C) Active immunity
D) Adaptive immunity
Answer: D) Adaptive immunity

What is the name of the white blood cells that engulf and destroy invading pathogens?
A) B cells
B) T cells
C) Natural killer cells
D) Macrophages
Answer: D) Macrophages

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Which type of T cell is responsible for regulating the immune response and preventing excessive inflammation?
A) Helper T cells
B) Memory T cells
C) Cytotoxic T cells
D) Regulatory T cells
Answer: D) Regulatory T cells

What is the name of the process by which pathogens are engulfed and destroyed by white blood cells?
A) Phagocytosis
B) Apoptosis
C) Hematopoiesis
D) Immunosuppression
Answer: A) Phagocytosis

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