_____ 21) Which of the following would you expect to see in a patient suffering
ID: 242348 • Letter: #
Question
_____ 21) Which of the following would you expect to see in a patient suffering from chronic allergies?
A) decreased IgG titers B) decreased IgM titers C) increased IgA titers
D) increased IgE titers D) none of the above, immunoglobulins don’t play a role
_____ 22) Which of the following statements regarding the cell-mediated immune response is FALSE?
A) Antigen presentation is needed for initial response to pathogen.
B) Cytotoxic T lymphocytes create memory cells.
C) Cell mediated responses kill intracellular pathogens by destroying infected host cells.
D) Cytotoxic T lymphocytes kill by phagocytosis.
E) Cytotoxic T lymphocyte can kill many target cells by sending signal for cell suicide (apoptosis)
24) A cell which has ingested a foreign invader and has displayed portions of this invader along with the cell’s own MHC protein is called a
A) B-cell B) helper T-cell
C) antigen presenting cell D) suppressor T-cell E) macrophage
Explanation / Answer
21.
D: Increased IgE titers
The increases with the increase in IgE antibody value. Studies have shown that the people with high total IgE have an increased chance of allergic sensitization.
22.
B: Cytotoxic T lymphocytes create memory cells
Memory cells are created by B-lymphocytes
24.
C: antigen presenting cell
Antigen presenting cells are one of the WBC which ingests the antigen or microbe and attaches its antigenic portions to its own surface and thereby helps to display the antigens to helper T cells.
white blood cells that ingest a foreign substance or a microbe and attaches antigenic portions of the ingested material to its own surface, thereby displaying the antigens to a helper T cell
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