Textbook Question
Tc cells recognize epitopes only when the latter are held by:
a. MHC proteins
b. B cells
c. Interleukin 2
d. Granzyme
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Ch. 16 - Adaptive Immunity
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 16, Problem 7
The major class of immunoglobulin found on the surfaces of the walls of the intestines and airways is secretory:
a. IgG
b. IgM
c. IgA
d. IgE
e. IgD
Verified step by step guidance1
Understand that immunoglobulins (antibodies) are proteins produced by B cells that play key roles in immune defense, each class having distinct functions and locations.
Recall the main classes of immunoglobulins: IgG, IgM, IgA, IgE, and IgD, and their typical roles in the immune system.
Focus on the immunoglobulin class that is predominantly found in mucosal areas such as the intestines and airways, where it provides a first line of defense by neutralizing pathogens.
Identify that secretory immunoglobulin A (IgA) is the major antibody class present on mucosal surfaces, including the walls of the intestines and airways.
Conclude that the correct answer is the immunoglobulin class known as secretory IgA, which is specialized for mucosal immunity.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Immunoglobulin Classes
Immunoglobulins (antibodies) are proteins produced by B cells that recognize and neutralize pathogens. The main classes include IgG, IgA, IgM, IgE, and IgD, each with distinct roles in immune defense and distribution in the body.
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Review Table of Immunoglobin Classes
Secretory IgA and Mucosal Immunity
Secretory IgA is the predominant antibody found on mucosal surfaces such as the intestines and airways. It plays a critical role in protecting mucous membranes by preventing pathogen adherence and neutralizing toxins without causing inflammation.
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Functions of Other Immunoglobulins
IgG is the most abundant antibody in blood and extracellular fluid, providing systemic immunity. IgM is the first antibody produced during an immune response. IgE is involved in allergic reactions, and IgD functions mainly as a B cell receptor.
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Related Practice
Textbook Question
Mark each statement as either true or false. Rewrite false statements to make them true by changing the underlined words.
__________ Secretion of antibodies by activated B cells is a form of cell-mediated immunity.
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Textbook Question
Which cells express MHC class I molecules in a patient?
a. Red blood cells
b. Antigen-presenting cells only
c. Neutrophils only
d. All nucleated cells
e. Dendritic cells only
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Textbook Question
In which of the following sites in the body can B cells be found?
a. Lymph nodes
b. Spleen
c. Red bone marrow
d. Intestinal wall
e. All of the above
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Textbook Question
Among the key molecules that control cell-mediated cytotoxicity are:
a. Perforin
b. Immunoglobulins
c. Complement
d. Cytokines
ie. Interferons
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Textbook Question
Which of the following lymphocytes predominates in blood?
a. T cells
b. B cells
c. Plasma cells
d. Memory cells
e. All are about equally prevalent
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