WHAT IS LIFE? A GUIDE TO BIO W/PHYSIO
20th Edition
ISBN: 9781319421670
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 27, Problem 2MC
Summary Introduction
Introduction:
The complement system consists of a number of proteins that aid in the functions of both specific and non-specific immune cells.
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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 platelets
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.
Which of the following leads to swelling seen in an inflammation?
a. Vasodilation
b. Complement activation
c. Phagocytosis by macrophages
d. Increased capillary permeability
Chapter 27 Solutions
WHAT IS LIFE? A GUIDE TO BIO W/PHYSIO
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- Splitting the complement protein (C3) into C3a and C3b as a result of contact with the Fc region of antibodies coating a bacterium illustrates the onset of which of the following ? Choose from the following: (A) classical pathway of complement activation (B) alternate pathway of complement activationarrow_forwardIn what process is tumor necrosis factor (TNF) not involved?a. chemotaxis of phagocytesb. fever c. the inflammatory responsed. the classic complement pathwayarrow_forwardBoth antibodies and particular complement proteins, such as c3b, are capable of aiding phagocytes in attaching to bacteria. What term best describes these? O 1) opsonins O 2) haptens O 3) pyogens O 4) perforinsarrow_forward
- Which of the following is not a consequence of activation of the complement system? Select one: a. Lysis of bacteria and other foreign cells b. Repair of damaged tissue c. Increased phagocytosis by phagocytic cells (opsonization) d. Attraction and activation of leukocytesarrow_forwardMATCH THE CORRECT WORDS TO THE DEFINITION A. spontaneous hydrolysis B. Random Generation C. C3 convertase D. membrane-attack complex E. Classical and lectin F. Antigen-antibody immune complex G. Microbial carbohydrates H. Decay-accelerating Factor (DAF) I. Short half-life J. Factor Iarrow_forwardCD8 cells attack virally infected cells, usually killing them using what method? 1) Complement activation O2) 2) Apoptosis O 3) Phagocytosis O 4) Senescencearrow_forward
- Which components are considered a barrier to pathogen entry? all that apply Select one or more: a. PRRs b. plasma cells c. mucus d. lymph nodes e. lysozymearrow_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_forwardSome bacterial cells avoid the killing effects of activated complement proteins. How might they do this?arrow_forward
- If someone receives a blood transfusion or organ transplant, their body will notice the donor cells' ID tags. Their body might launch an immune response which includes the release of little proteins called antibodies. This is why ID tags and other surface markers on cell surfaces are often referred to as ______. ANSWER: A) autophagous B) membrane mediated transfer proteins C) carriers D) antigensarrow_forwardWhich of the following is not a function of antibodies? Select one: a. They neutralize pathogens by masking the pathogen surface. b. They act as molecular adaptors that bridge together pathogen and phagocyte surfaces. c. They exert toxic effects directly. d. They act as opsonins that mediate phagocytosis. e. They activate complement fixation.arrow_forwardWhat is a cytokine? A ) a. a chemical mediator (stimulus) of inflammation that is released by cells in response to tissue or cell damage O b. an antimicrobial substance made by neutrophils O c. a repair stimulator produced by Eosinophils during an allergic reaction O d. cellular (cyto-) substance that mediates noisy arguments between macrophages and lymphocytes And that I put A Cardiac disease is considered a(n) O a. acute, 3 O b. acute, 10 1 c. chronic, 3 O d. chronic, 10 Oe, acutely chronic, 114 And that I put Chronic 3 Are the 3 questions correct?arrow_forward
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