What is natural active immunity?

Production of one's own antibodies or T cells as a result of infection or natural exposure to antigen

Temporary immunity acquired through placenta or milk

Temporary immunity from injection of immune serum

Production of antibodies through vaccination

How is natural passive immunity acquired?

Through infection or natural exposure

Through injection of immune serum

What is the characteristic of artificial passive immunity?

Temporary immunity from injection of immune serum

Permanent immunity from natural exposure

Long-lasting immunity from vaccination

Temporary immunity acquired through placenta

Which of the following is NOT a characteristic of complex molecules that act as antigens?

Proteins, polysaccharides, glycoproteins, glycolipids

Antigenic determinants that stimulate immune responses

Small molecules that bind to host macromolecules

What is the first step in antigen processing as shown in the diagram?

Antigen residue is voided by exocytosis

During antigen processing, what happens after the lysosome fuses with the phagosome?

Antigen and enzyme mix in phagolysosome

Processed antigen fragments are displayed

Antigen residue is voided by exocytosis

What is the final step in the antigen processing pathway depicted in the diagram?

Processed antigen fragments are displayed on macrophage surface

Antigen residue is voided by exocytosis

What is the primary function of Cytotoxic T cells (Tc cells)?

Carry out attacks on foreign and diseased cells

Provide immunity from future exposure

What is the role of Memory T cells in cellular immunity?

Provide immunity from future exposure to antigens

Promote nonspecific defense mechanisms

What is the primary role of MHC-I proteins in antigen presentation?

To display peptides produced by host cells

Where are MHC-I proteins typically found?

On nearly all nucleated body cells

What is the first step in TC cell activation?

Binding of cytotoxic T cells to abnormal peptides on MHC-I

What is the primary role of MHC-II proteins in antigen presentation?

Stimulate helper T cells (CD4 cells)

Where are MHC-II proteins found?

Only on antigen presenting cells

What is the first step in the activation of helper T cells (CD4 cells)?

Binding to epitope displayed on MHC-II of APC

Which process involves costimulation via a cytokine in TH cell activation?

Binding of helper T cells to MHC-I

Binding of helper T cells to MHC-II

What is the result of the activation process of helper T cells?

Binding to epitope displayed on MHC-II

What is the role of perforin and granzymes in the lethal hit mechanism?

They decrease viral replication

How do interferons contribute to the immune response in the lethal hit mechanism?

They decrease viral replication and activate macrophages

They directly attack enemy cells

What is the function of tumor necrosis factor in the lethal hit mechanism?

It docks on cells with antigen-MHC-I protein complex

It releases perforin and granzymes

What is the primary function of a cytotoxic T cell as shown in the image?

To bind to and destroy cancer cells

What is the role of a T cell in the immune response?

To destroy infected or cancerous cells

What is depicted in the image related to cancer cells?

Destruction of a cancer cell by a T cell

What is the role of B cell receptors in humoral immunity?

They bind to antigens and display epitopes on MHC-II protein.

They destroy antigens directly.

They produce antibodies immediately.

They differentiate into memory cells.

What happens after costimulation by T_H cells in the humoral immune response?

B cells divide and differentiate into plasma cells.

B cells attack antigens directly.

How do antibodies function in the attack phase of humoral immunity?

They bind to antigens and tag them for destruction.

They transform into plasma cells.

They display antigens on MHC-I protein.

What is the function of memory B cells in humoral immunity?

They remember past antigens for faster response in future infections.

They produce antibodies immediately.

They differentiate into plasma cells.

Fever and Cytokines Quiz

Authored by Diana Bennett

Science

University

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64 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one of the benefits of fever as a defense mechanism?

It decreases metabolic rate.

It inhibits interferon activity.

It accelerates tissue repair.

It promotes pathogen reproduction.

Which cytokine is known as a pyrogen and is involved in fever?

Interleukin 2

Interleukin 1

Interleukin 6

Interleukin 10

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can happen if a fever exceeds 105°F?

Increased energy levels

Delirium

Enhanced appetite

Improved concentration

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the stages of fever?

Onset, peak, resolution

Onset, stadium, defervescence

Initiation, climax, decline

Start, middle, end

What is the primary function of cellular immunity?

Antibody production

Cell-mediated response

Memory cell formation

Hormone regulation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of immunity involves B cells?

Cellular immunity

Humoral immunity

Innate immunity

Passive immunity

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What characteristic is shared by both cellular and humoral immunity?

Specificity and memory

Immediate response

Non-specific defense

Hormonal regulation

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Fever and Cytokines Quiz

What is one of the benefits of fever as a defense mechanism?

Which cytokine is known as a pyrogen and is involved in fever?

What can happen if a fever exceeds 105°F?

What are the stages of fever?

What is the primary function of cellular immunity?

Which type of immunity involves B cells?

What characteristic is shared by both cellular and humoral immunity?

What is natural active immunity?

Which type of immunity involves the production of memory cells through vaccination?

How is natural passive immunity acquired?

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