Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

20. Adaptive Immunity

Activation of T Lymphocytes

Microbiology

20. Adaptive Immunity

Activation of T Lymphocytes

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Multiple Choice

Antigen presenting cells, including dendritic cells in lymph nodes, are observed to bind T cells on their surfaces. If the dendritic cell is presenting harmful antigens on its surface and creating co-stimulatory molecules, what will happen to the T cells that bind to the dendritic cell?

The naive T cells that bind the dendritic cell will activate and form effector T cells.

The cytotoxic T cells which bind the dendritic cell will signal the dendritic cell to undergo apoptosis.

The anergic T cells which bind the dendritic cell will undergo apoptosis.

The helper T cells that bind the dendritic cell will deactivate and become naive T cells.

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Verified step by step guidance

Understand the role of antigen-presenting cells (APCs): APCs, such as dendritic cells, present antigens to T cells to initiate an immune response. They display antigens on their surface using major histocompatibility complex (MHC) molecules.

Identify the types of T cells involved: T cells can be categorized into different types, including naive T cells, cytotoxic T cells, anergic T cells, and helper T cells, each with specific functions in the immune response.

Consider the activation of naive T cells: When naive T cells bind to a dendritic cell presenting harmful antigens along with co-stimulatory signals, they become activated and differentiate into effector T cells, which are capable of responding to the antigen.

Examine the role of cytotoxic T cells: Cytotoxic T cells, upon recognizing antigens presented by dendritic cells, can induce apoptosis in the target cells, including the dendritic cells if they are deemed harmful.

Analyze the response of anergic and helper T cells: Anergic T cells, which are non-responsive, may undergo apoptosis if they bind to the dendritic cell. Helper T cells, on the other hand, typically become activated rather than deactivated when they encounter a dendritic cell presenting antigens with co-stimulatory signals.