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Immunology Overview Quiz

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Questions and Answers

Which statement accurately describes an antigen?

An antigen is any foreign molecule that can trigger an immune response. (correct)

An antigen is a pathogen that always causes disease.

An antigen is a type of immune cell that produces antibodies.

An antigen is a vaccine that provides active immunity.

What is the primary function of B cells in the immune response?

To directly ingest and destroy pathogens.

To transport immune cells to the site of infection.

To produce antibodies that neutralize pathogens. (correct)

To activate other immune cells with cytokines.

What does clonal selection refer to in the immune response?

The transfer of antibodies from one individual to another.

The method by which pathogens evade immune detection.

The process of eliminating all immune cells after an infection.

The production of identical immune cells targeting specific pathogens. (correct)

Which of the following correctly describes passive immunity?

<p>It is acquired through the transfer of antibodies from one individual to another.</p> Signup and view all the answers

Which of the following is an example of a zoonotic disease?

<p>Bird flu</p> Signup and view all the answers

Which of the following correctly describes Helper T Cells?

<p>They activate immune cells with cytokines.</p> Signup and view all the answers

Passive immunity involves the body's own production of antibodies after exposure to an antigen.

<p>False</p> Signup and view all the answers

Define zoonosis.

<p>The transmission of a disease from animals to humans.</p> Signup and view all the answers

The immune system is activated by foreign molecules known as __________.

<p>antigens</p> Signup and view all the answers

Match the following diseases with their classification:

<p>Rabies = Zoonotic disease Ebola = Zoonotic disease Diabetes = Not zoonotic disease Cancer = Not zoonotic disease</p> Signup and view all the answers

<h1>=</h1> <h1>=</h1> Signup and view all the answers

Study Notes

Antigens

Antigens are foreign molecules that trigger an immune response.
Examples include pollen, bacteria, viruses.
Antigens are located on the surface of pathogens.

Immune Response (Challenge and Response)

Challenge: Antigens on pathogens invading the body.
Response: Ingestion of the pathogen by a macrophage.

Helper T Cells vs. B Cells

Helper T Cells: Activate immune cells using cytokines.
B Cells: Produce antibodies.

Clonal Selection

Clonal selection is the body's process of producing B and T cells to target specific pathogens.
These cells identify and respond to specific pathogens.

Immunity

Immunity is the body's ability to fight off infections and harmful substances.
Recognizing and neutralizing pathogens or toxins is part of immunity.
Passive Immunity: Transfer of antibodies.
Active Immunity: Production of antibodies after exposure to antigens (e.g., vaccines or infection).

Zoonosis

Zoonosis is the transmission of diseases from animals to humans, caused by pathogens (bacteria, viruses, or parasites).
Examples include COVID-19, bird flu.

Zoonotic vs. Non-Zoonotic Diseases

Zoonotic: Rabies, Ebola
Non-Zoonotic: Diabetes, Cancer

Allergic Symptoms

Allergic symptoms can be caused by histamines.

Smallpox

Smallpox is a disease.

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Description

Test your knowledge on key concepts related to antigens, immune responses, and types of immunity. This quiz covers essential topics like clonal selection, helper T cells, B cells, and zoonotic diseases. Perfect for anyone studying biology or medicine!