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Quiz about Immunology
Quiz about Immunology

Immunology Trivia Quiz


This quiz is mainly on the molecular components of the Immune System.

A multiple-choice quiz by purelyqing. Estimated time: 3 mins.
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Author
purelyqing
Time
3 mins
Type
Multiple Choice
Quiz #
269,452
Updated
Dec 03 21
# Qns
10
Difficulty
Average
Avg Score
6 / 10
Plays
3448
Awards
Top 35% Quiz
- -
Question 1 of 10
1. What are the two types of immunity? Hint


Question 2 of 10
2. Which of these are the most abundant in circulation? Hint


Question 3 of 10
3. Which of these is a professional antigen presenting cell (APC)? Hint


Question 4 of 10
4. Which of these is a secondary lymphoid organ? Hint


Question 5 of 10
5. T cells require two signals to be activated. One signal is the binding of the antigen presented by the antigen presenting cell (APC). The other is the binding of Hint


Question 6 of 10
6. What kind of cells produce antibodies? Hint


Question 7 of 10
7. How are the different isotypes of antibodies produced? Hint


Question 8 of 10
8. Which of these is an autoimmune disease? Hint


Question 9 of 10
9. What can be a cause of immunodeficiencies? Hint


Question 10 of 10
10. What is hypersensitivity? Hint



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Nov 15 2024 : Guest 82: 6/10
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quiz
Quiz Answer Key and Fun Facts
1. What are the two types of immunity?

Answer: adaptive, innate

The innate immunity carries out the initial response to pathogens and activates the adaptive immune system. The innate immunity is not specific and can respond to most, if not all, antigens. It does not provide long-lasting immunity. The adaptive immunity is highly specific and tailored to a specific antigen. It provides long-lasting immunity against the specific antigen.
2. Which of these are the most abundant in circulation?

Answer: neutrophils

Basophils make up less than 1% of total leukocytes (white blood cells). Mast cells are found in connective tissues and close to mucosal surfaces. Dendritic cells are found in tissues, lymph nodes, spleen and thymus.
3. Which of these is a professional antigen presenting cell (APC)?

Answer: dendritic cells

A professional antigen presenting cell specializes in processing antigens into smaller pieces to be presented to lymphocytes so that an immune response can be initiated. Dendritic cells ingest antigens and degrade them into peptides. The peptides are fused with MHC Class II molecules and presented to T cells. Other professional APC include macrophages and B cells.
4. Which of these is a secondary lymphoid organ?

Answer: Spleen

A secondary lymphoid organ is an organ or site where lymphocytes (eg. B cells, T cells) migrate to so that they can encounter antigens and pathogens, in other words, germs. Other secondary lymphoid organs include the lymph nodes and mucosa-associated lymphoid tissue (MALT).
5. T cells require two signals to be activated. One signal is the binding of the antigen presented by the antigen presenting cell (APC). The other is the binding of

Answer: co-stimulators

Examples of co-stimulatory molecules are B7 and CD28, which are molecules expressed on the surface of T cells, APCs and B cells. These molecules must bind to each other to complete T-cell activation.
6. What kind of cells produce antibodies?

Answer: B cells

B cells begin to produce and secrete antibodies after being activated by T cells or antigens.
7. How are the different isotypes of antibodies produced?

Answer: class switching

After activation, some B cells will class switch to produce a different isotype of immunoglobulin. This is controlled by cytokines secreted by T helper cells.
The five different isotypes of a particular antibody all have the same specificity for a particular antigen, but they function in different parts of the body such as mucosal surfaces, tissue or blood.
8. Which of these is an autoimmune disease?

Answer: All of these

Autoimmune diseases occur when the immune system fails to recognize the body's cells and tissue as "self" and initiates an immune response against the body's cells and tissue.
9. What can be a cause of immunodeficiencies?

Answer: All are correct

Immunodeficiency is a condition where the immune system fails to function properly resulting in increased susceptibility to infections or recurrent infections.
10. What is hypersensitivity?

Answer: Allergic reactions

Hypersensitivity is another name for allergic reactions. They happen when the immune system over-reacts against harmless antigens present in the environment.
Source: Author purelyqing

This quiz was reviewed by FunTrivia editor crisw before going online.
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