please help True/False Indicate whether the sentence or statement is true or fal

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True/False Indicate whether the sentence or statement is true or false Antigen presenting cells with antigen present on MHC II bind to CD4 cells with compatible receptors, and the APC releases cytokines causing the CD4 cells to activate and produce plasma cells An Rh positive woman gives birth to an Rh negative child. The first child is born without complications, however there is a risk of fatal hemolyic disease in subsequent Rh negative fetuses during pregnancy . 2. 3. Cells called histiocytes are specialized phagocytes which remain within certain tissues. 4. MACs are donut-shaped protein complexes of the complement system that create holes in bacterial cells to cause apoptosis STORCH is an acronym referring to vertically-transmitted diseases 5. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 6. Within the ABO antigen-antibody system, a person with blood type A can safely receive a. Blood types A and O only b. Blood types B and O only Blood types A and B only neither blood types A nor B c. d. Which event happens first? a. T cell responses b. presentation of antigens 7. lymphocyte development into naive cells d. c. production of antibodies 8. Which o the following bacterial species is considered normal flora of the skin? 9. These antibodies are capable of stimulating complement, causing type IIl hypersensitivity reactions: 10. Components of the first line of defense include all the following except: a. Streptococcus mutans b. Klebsiella pneumoniae c. Escherichia coli d. Staphylococcus epidermidis a. IgG and IgM b. IgE and IgA c. IgA and IgG d. IgM and IgD phagocytic white blood cells keratinization of the skin a. flushing action of tears b. mucociliary system The physical sensations of a disease that can only be relayed by a patient such as nausea and pain are called a. signs c. d. c. syndrome d. etiology b. symptoms 12. This term describes an antigen that is too small to be immunogenic, however it binds to proteins in the bod to increase its size, allowing it to then be able to trigger an immune reaction: a. hapten b. superantigen c. alloantigen d. Epitope

Explanation / Answer

Multiple Choice Question

6. a. Because A group only has A antigen ad O has no antigen.

7. c. Naive T cells are the first stage of T cells. After that all the T cell reaction cascade occurs.

8. d. S. epidermidis is the most common bacteria which is present in skin microbiome.

9. a. Ig G and Ig M are responsible for antibody-dependent cell-mediated cytotoxicity.

10. c. WBC are present inside the body and it cannot be considered as the first line of defense.

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