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T Cell Response to Viral Infections

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Questions and Answers

What is the primary function of antibodies in eliminating virus infection?

To recognize viral antigens without antigen presentation
To activate T cells to attack virus-infected cells
To directly kill virus-infected cells
To bind to the virus and neutralize its ability to infect cells (correct)

What happens to some B and T cells after the infection is cleared?

They are eliminated from the body
They transform into different types of immune cells
They become memory cells, remaining in the body for a long time (correct)
They become dormant and remain inactive

How do T cells respond to viral antigens?

By directly attacking virus-infected cells (correct)
By producing antibodies to neutralize the virus
By recognizing viral antigens without antigen presentation
By activating B cells to produce more antibodies

What is the primary role of B cells in eliminating virus infection?

To produce antibodies to neutralize the virus (A) Signup and view all the answers

What is required for B cells to recognize viral antigens?

Direct recognition without antigen presentation (D) Signup and view all the answers

What is the outcome when activated T cells target virus-infected cells?

The cell undergoes apoptosis or lysis (D) Signup and view all the answers

What is the primary function of Natural Killer cells in the immune response?

To recognize and eliminate infected cells through apoptosis (D) Signup and view all the answers

What is the role of antigen-presenting cells in eliminating virus infection?

To capture and process viral antigens for presentation to T cells (D) Signup and view all the answers

What is the result of perforin released by NK cells?

Creation of pores in the target cell's membrane (D) Signup and view all the answers

What is the role of MHC I or II molecules on the surface of infected cells?

To distinguish infected cells from healthy cells (B) Signup and view all the answers

What is the result of B cell activation?

Production of antibodies that neutralize viral particles (D) Signup and view all the answers

What is the role of dendritic cells in the immune response?

To activate and mature T cells (D) Signup and view all the answers

What is the function of MHC class I molecules?

To present pieces of viral proteins on the cell surface (A) Signup and view all the answers

Which type of T cells recognize and kill virus-infected cells?

CD8+ T cells (A) Signup and view all the answers

What is the function of MHC class II molecules?

To present exogenous viral peptides to CD4+ T cells (A) Signup and view all the answers

What is the adaptive immune response characterized by?

A specific response to a particular pathogen (C) Signup and view all the answers

What type of cells are involved in the adaptive immune response?

Lymphocytes, including B cells and T cells (A) Signup and view all the answers

What do MHC class I glycoproteins do to viral proteins?

Present them on the cell surface (B) Signup and view all the answers

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