THE HUMAN IMMUNE SYSTEM
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The proteins receive electrical signals from nerve cells.
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The proteins leave the cell and travel in the bloodstream to other cells.
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The proteins interact directly with proteins on the surfaces of other cells.
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The proteins bind to molecules secreted by cells located in other parts of the body.
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Detailed explanation-1: -Which of the following statements best helps explain how cell surface proteins, such as MHC proteins and T cell receptors, mediate cell communication over short distances? The proteins receive electrical signals from nerve cells.
Detailed explanation-2: -In the primary response to infection, antibodies are secreted first from plasma cells.
Detailed explanation-3: -Often, cells that are near one another communicate through the release of chemical messengers (ligands that can diffuse through the space between the cells). This type of signaling, in which cells communicate over relatively short distances, is known as paracrine signaling.
Detailed explanation-4: -Adaptive immune responses are carried out by white blood cells called lymphocytes. There are two broad classes of such responses-antibody responses and cell-mediated immune responses, and they are carried out by different classes of lymphocytes, called B cells and T cells, respectively.
Detailed explanation-5: -Explain how cells communicate with one another over short and long distances. Cells communicate over short distances by using local regulators that target cells in the vicinity of the signal-emitting cell – a. Signals released by one cell type can travel long distances to target cells of another cell type.