Microbiology With Diseases.. -Masteringmic.
5th Edition
ISBN: 9780134298719
Author: BAUMAN
Publisher: PEARSON
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Chapter 15, Problem 4MC
Summary Introduction
Introduction:
The “alternative complement pathway” of the complement system is an “innate component” of the “immune system” is a defense against infections. The alternative pathway is one of “three complement pathways” that kill pathogens.
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Which of these statements about complement proteins C3a and C5a is false?a. They are released during the complement fixation process.b. They stimulate chemotaxis of phagocytic cells.c. They promote the activity of phagocytic cells.d.They produce pores in the victim plasma membrane.
Choose the combination of answers that most accurately completes the statement. In what process is tumor necrosis factor (TNF) not involved? a. chemotaxis of phagocytes b. fever c. the infl ammatory response d. the classic complement pathway
The complement system of defense is composed of proteins that are always present in the blood. Which statement describes the importance of this system in early pathogen defense?
A.) It does not have to be activated by antibodies.
B.) It rapidly lower the blood pH.
C.) It recognizes specific common pathogens.
D.) It causes immediate pathogen lysis.
Chapter 15 Solutions
Microbiology With Diseases.. -Masteringmic.
Ch. 15 - Phagocytes of the epidermis are called _________....Ch. 15 - Prob. 2MCCh. 15 - Prob. 3MCCh. 15 - Prob. 4MCCh. 15 - Prob. 5MCCh. 15 - Prob. 6MCCh. 15 - Interferons ________. a. do not protect the cell...Ch. 15 - Prob. 8MCCh. 15 - Toll-like receptors (TLRs) act to ________. a....Ch. 15 - Prob. 10MC
Ch. 15 - Prob. 1TFCh. 15 - Prob. 2TFCh. 15 - Prob. 3TFCh. 15 - Prob. 4TFCh. 15 - Prob. 5TFCh. 15 - Prob. 6TFCh. 15 - Prob. 7TFCh. 15 - Prob. 8TFCh. 15 - Prob. 9TFCh. 15 - Prob. 10TFCh. 15 - Prob. 11TFCh. 15 - Prob. 12TFCh. 15 - Prob. 13TFCh. 15 - Prob. 14TFCh. 15 - Prob. 15TFCh. 15 - In the blank beside each cell, chemical, or...Ch. 15 - Prob. 2MCh. 15 - Label the steps of phagocytosis.Ch. 15 - Prob. 2VICh. 15 - Prob. 1SACh. 15 - How does a phagocyte know it is in contact with a...Ch. 15 - Prob. 3SACh. 15 - Prob. 4SACh. 15 - Prob. 5SACh. 15 - Prob. 6SACh. 15 - Prob. 1CTCh. 15 - What might happen to someone whose body did not...Ch. 15 - Prob. 3CTCh. 15 - Prob. 4CTCh. 15 - There are two kinds of agranulocytes in the...Ch. 15 - A patient has a genetic disorder that prevents him...Ch. 15 - Prob. 7CTCh. 15 - Prob. 8CTCh. 15 - Prob. 9CTCh. 15 - Prob. 10CTCh. 15 - Prob. 11CTCh. 15 - A patient has a genetic disorder that makes it...Ch. 15 - Prob. 13CTCh. 15 - Prob. 14CTCh. 15 - Prob. 1CMCh. 15 - Prob. 1TMWCh. 15 - Prob. 2TMWCh. 15 - Prob. 3TMWCh. 15 - Prob. 1CCSCh. 15 - Prob. 2CCS
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- Antibodiesa. prevent antigens from binding together.b. promote phagocytosis.c. inhibit inflammation.d. block complement activation.e. block the function of opsoninsarrow_forwardTwo of the major actions of complement are a. increased inflammatory response and cytolysis. b. recognition and destruction of a specific antigen and cytolysis. c. production of antibody and increased inflammatory response. d. release of cytokines to increase the immune response and production of antibody.arrow_forwardPart of the complement system of defense is opsonization. This process A.) creates an acidic environment that prevents pathogen attachment B.) causes holes to form in the pathogen's cell walls. C.) coats the pathogen exterior so that it is recognized by the host's phagocytes. D.) causes the pathogen to become trapped in mucus.arrow_forward
- Immunoglobins help eliminate the pathogen through the process of: A. Release of hydrolytic enzymes on the pathogen B. Agglutination and precipitation C. Direct phagocytosis D. Activating plateletsarrow_forwardWhich of the following does not accurately describe complement components? A. made by the spleen B. located in extracellular spaces C. some function as proteases once activated D. activated by a cascade of enzymatic reactions. E. soluble proteinsarrow_forwardThe cytolytic action of the complement system is most similar to the action ofa. interleukin-1.b. platelet-derived growth factor.c. granzymes.d. perforin.e. IgEarrow_forward
- A(n) _____ is an inactive form of an enzyme that frequently participates in a cascade of enzymatic reactions during complement activation. a. regulator of complement activation b. convertase c. complement control protein module d. zymogen e. opsonin.arrow_forwardof the choices, which cells stimulate directly B cells to divide and produce antibodies? a. mast cells b. marcophages c. Nk cells d. TH cellsarrow_forwardIn what process is tumor necrosis factor (TNF) not involved?a. chemotaxis of phagocytesb. fever c. the inflammatory responsed. the classic complement pathwayarrow_forward
- Explain why each choice (a-d) is correct or incorrect. All of the following are true of the classical pathway of complement activation EXCEPT one. Select the one answer that does NOT describe the classical pathway of complement activation. a. It is an example of overlap between innate and adaptive immune function. b. It requires that circulating antibodies are bound to antigens. c. Classical activation will result in enhanced inflammation, opsonization as well as formation of MAC proteins. d. It activates T helper cells by presenting antigen to them.arrow_forwardThe main effect of staphylococcal protein A is toa) interfere with phagocytosis.b) enhance the attachment of the Fc portion of antibody to phagocytes.c) coagulate plasma.d) kill white blood cells.e) degrade collagen.arrow_forwardActivated helper T Cells participate in which of the following processes? a.) Differentiation of memory B cells b.) Activation of cytotoxic T Cells c.) Facilitation of macrophage phagocytosis d.) All of abovearrow_forward
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