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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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 3
Mark each statement as either true or false. Rewrite false statements to make them true by changing the underlined words.
__________ Lymphocytes with CD8 glycoprotein are helper T cells.
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Identify the key terms in the statement: 'Lymphocytes with CD8 glycoprotein' and 'helper T cells'.
Recall that lymphocytes expressing the CD8 glycoprotein are actually cytotoxic T cells, not helper T cells.
Determine that the statement is false because CD8+ lymphocytes are cytotoxic T cells, while helper T cells express CD4 glycoprotein.
Rewrite the false statement by replacing 'helper T cells' with 'cytotoxic T cells' to make it true: 'Lymphocytes with CD8 glycoprotein are cytotoxic T cells.'
Understand the functional difference: CD8+ cytotoxic T cells directly kill infected cells, whereas CD4+ helper T cells assist other immune cells.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Types of T Lymphocytes
T lymphocytes are a type of white blood cell critical for adaptive immunity. The two main types are helper T cells (CD4+) and cytotoxic T cells (CD8+). Helper T cells assist other immune cells, while cytotoxic T cells directly kill infected or abnormal cells.
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Guided course
03:31
Introduction to T Lymphocytes
CD4 and CD8 Glycoproteins
CD4 and CD8 are surface glycoproteins that distinguish T cell subsets. CD4 is expressed on helper T cells, which coordinate immune responses, whereas CD8 is found on cytotoxic T cells, which target and destroy infected cells.
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05:58Cytotoxic T Cells vs. Helper T Cells
Role of Helper T Cells
Helper T cells (CD4+) regulate immune responses by activating other immune cells like B cells and macrophages. They do not directly kill infected cells but enhance the immune system's ability to respond effectively.
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04:27Review of Cytotoxic vs Helper T Cells
Related Practice
Textbook Question
The nearby image is a transmission electron micrograph of a dendritic cell. Indicate where a scientist could find molecules of MHCI and MHC II. Label a pseudopod and a vesicle.
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Textbook Question
Mark each statement as either true or false. Rewrite false statements to make them true by changing the underlined words.
__________ Cytotoxic T cells secrete immunoglobulin.
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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
Textbook Question
Why does the body have both antibody and cell-mediated immune responses?
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Textbook Question
Rejection of a foreign skin graft is an example of:
a. Destruction of virus-infected cells
b. Tolerance
c. Antibody-mediated immunity
d. A secondary immune response
e. A cell-mediated immune response
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