Sprint * 35% 11:13 PM macmillanhighered.com Which of the following statements is

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Sprint * 35% 11:13 PM macmillanhighered.com Which of the following statements is false? Natural killer cells are a type of white blood cell that kills virus-infected cells Phagocytes are larger than lymphocytes. The two major families of white blood cells are phagocytes and leukocytes. Lymphocytes include B cells and T cells O Red blood cells have no defensive function. 01 which of the following statements is false? Nonself substances are major histocompatibility proteins that have been altered by T cells. Cytokines are proteins that alter the activity of lymphocytes and macrophages Immune system proteins bind pathogens, label cells as self, and signal other cells. Major histocompatibility complex I proteins occur on the surfaces of a broader range of cell types than do major histocompatibility complex proteins. O Major histocompatibility complex proteins are used in identifying self from nonself substances 04 Which of the following statements is false? Macrophages and dendritic cells have toll-like receptors on their surfaces. Binding of pathogenic molecules to toll-like receptors activates toll-like receptors, which initiate a protein kinase cascade within the cell. O The signal transduction pathway associated with toll-like receptors ultimately activates the transcription of genes that encode for proteins that function in innate and adaptive defenses. 0 The result of the protein kinase cascade initiated by toll-like receptors is to change the shape of a particular transcription factor, which can then enter the nucleus Blocking toll-like receptors would enhance overly strong inflammatory responses Os Which of the following statements is false? O T-helper cells integrate the actions of the humoral and cellular immune responses. The humoral immune response is directed at antigens that have become established within cells. The humoral and cellular immune responses operate simultaneously. Cytotoxic T cells perform critical functions in the cellular immune response, and B cells produce antibodies in the humoral immune response. The humoral immune response produces antibodies, and the cellular immune response can destroy infected cells. All of the following characterize antibodies except oThey bind to antigen on the surface of pathogen cells. O They are secreted as multiple copies when an antigen invades the body for the first time and binds to a B cell receptor. They bind to free antigen. oThey present antigen to T-helper cells They travel freely in blood and lymph. 0, Plasma cells are O Both b and c n the humoral immune effecter B memary T cels

Explanation / Answer

1- the two major family of wbc is leukocyte and phagocyte .

Note - the two major families of wbc is granulocyte and agranulocyte . The granulocyte include neutrophil basiphil and esionophil while agranulocyte include lymphocyte and monocyte . The manor difference between two is granulocyte and agranulocyte.

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