Which of the following statements is/are FALSE? 1. Autoimmune diseases caused by

Question

Which of the following statements is/are FALSE? 1. Autoimmune diseases caused by foreign antigens that closely resemble "self antigens." 2. Faulty immunocompetence processes (lymphocyte programming) could be to blame for the sudden onset of autoimmune diseases. 3. severe Combined Immunodeficiency syndrome or SCID is a debilitating condition where the individual's entire immune system is non-functional-the "boy-in-the-bubble." 4. In Multiple sclerosis (Ms) antibodies attack myelin sheaths hampering neurotransmission. 5. Rheumatoid Arthritis results when your immune system "attacks" your body's joints. 6. Anaphylactic shock can result in death and is nothing more than an extreme allergic response. a. 1, 3, 4 b. 2, 4, 6 c. 1, 3, 5, 6 d. All of the above e. None of the above 28. Which of the following are the common means of killing/eliminating errant or invading cells? a. Cytotoxic T-cells release of perforin proteins and granzymes onto cancerous cells. b. The membrane attack complexes (MACs) self assembling in bacterial cell membranes. c. Phagocytosis of whatever is "marked" by opsonization. d. All of the above e. Only a & c Which of the following statements are TRUE? 1. Interferons are chemicals released by viral-infected body cells as a means "wam" their neighbors about the imminent assault. 2. The movement of neutrophils towards an area of injury or infection following at trail of secreted chemicals is called positive chemotaxis. 3. Your body's Innate Defenses consist of surface barriers as well as internal non-specific defense mechanisms. 4. Natural Killer Cells do their job of assassination of invaders by simple phagocytosis. 5. Fever actually serves useful purposes including speeding up enzyme activity and to sequester essential nutrients like Fe & Zn - therefore keeping them from bacterial invaders. 6. Each individual plasma cell can produce ridiculous amounts of antibodies - about 2,000 antibodies/second for their short 4 to 5 day lifespan. a. 1, 2, 4, 5 b. 2, 3, 4, 6 c. 2, 3, 5, 6 d. 1, 2, 3, 5, 6 e. 1, 2, 3, 4, 5, 6 Which of the following is/are true concerning Helper T-cells? a. They are activated via APCs using MHC Class II markers. b. Once activated, they enhance most everything about cell-mediated immunity - activating Cytotoxic T-cells, activating more naive immunecompetent B-cells. c. They are the specific targets of the human immunodeficiency virus. d. all of the above e. Only a & c

Explanation / Answer

28. All of the above-stated methods are used for killing invading cells. Thus answer will be d (all of the above).

30.

All of the above-stated methods are used for killing invading cells. Thus answer will be d (all of the above).

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