Immune System Study Materials for Competitive Exams

Immune System

Q. What is an autoimmune disease?

Solution

An autoimmune disease occurs when the immune system mistakenly attacks the body's own tissues.

Correct Answer: B — A disease where the immune system attacks the body

Q. What is the function of the complement system?

Solution

The complement system enhances inflammation, opsonizes pathogens, and can directly lyse them.

Correct Answer: D — All of the above

Q. What is the primary function of T cells in the immune system?

Solution

T cells are primarily responsible for directly killing infected cells and coordinating the immune response.

Correct Answer: B — Destroy infected cells

Q. Which cells are primarily involved in the innate immune response?

Solution

Macrophages are key players in the innate immune response, providing immediate defense against pathogens.

Correct Answer: C — Macrophages

Q. Which cytokine is primarily involved in the regulation of immune responses?

Solution

Interferons are key cytokines that help regulate immune responses, particularly in viral infections.

Correct Answer: A — Interferon

Q. Which of the following is NOT a component of the adaptive immune system?

Solution

Macrophages are part of the innate immune system, while B cells, T cells, and antibodies are components of the adaptive immune system.

Correct Answer: C — Macrophages

Q. Which type of white blood cell is primarily responsible for producing antibodies?

Solution

B cells are responsible for producing antibodies that target specific antigens.

Correct Answer: B — B cells

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