Multiple Choice
Bacterial PAMPs (Pathogen-Associated Molecular Patterns) are recognized by which type of cells in the innate immune system?
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21. The Immune System
Introduction to Cells of the Immune System
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Which of the following is an antigen-presenting cell?
A
Neutrophil
B
Platelet
C
Erythrocyte
D
Macrophage
Verified step by step guidance1
Understand the role of antigen-presenting cells (APCs) in the immune system. APCs are responsible for capturing antigens and presenting them to T cells, initiating an immune response.
Identify the types of cells that function as antigen-presenting cells. Common APCs include dendritic cells, macrophages, and B cells.
Review the functions of the cells listed in the problem: Neutrophils are primarily involved in phagocytosis and do not present antigens. Platelets are involved in blood clotting and do not have a role in antigen presentation. Erythrocytes (red blood cells) are responsible for oxygen transport and do not present antigens.
Recognize that macrophages are a type of white blood cell that can engulf pathogens and present antigens to T cells, making them an antigen-presenting cell.
Conclude that among the options given, macrophages are the correct answer as they are known for their role in antigen presentation in the immune system.
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