Answered: The complement system can be directly…

The complement system can be directly activated by: macromolecules present on bacterial cells antibodies attached to bacteria cells Macrophages T-cells Both A and B

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter9: Immunity And Disease

Section: Chapter Questions

Problem 2SQ: Complement proteins function in defense by _______. a. neutralizing toxins b. enhancing resident...

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Concept explainers

Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.

Question

The complement system can be directly activated by:
macromolecules present on bacterial cells
antibodies attached to bacteria cells.
Macrophages
000
T-cells
Both A and B

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Similar questions

Complement proteins function in defense by _______. a. neutralizing toxins b. enhancing resident bacteria c. promoting inflammation d. forming pores that cause pathogens to disintegrate e. both a and b f. both c and d
If a series of genetic mutations prevented some, but not all, of the complement proteins from binding antibodies or pathogens, would the entire complement system be compromised?
Which of the following leads to the redness of inflammation? increased vascular permeability anaphylactic shock increased blood flow complement activation
Although interferons have several effects, they are particularly useful against infections with which type of pathogen? a. bacteria b. viruses c. fungi d. helminths
Visit this website (http://openstaxcollege.org/l/lymphsystem) for an overview of the lymphatic system. What are the three main components of the lymphatic system?
Match the immune cell with its main function. ___dendritic cell a. professional phagocyte ___B cell b. antigen-presenter ___helper T cell c. activates other lymphocytes ___NK cell d. makes antibodies ___macrophage e. kills ailing body cells that lack MHC markers
Which of the following proteins downregulates the classical complement cascade by breaking up the C3 convertase into individual C4b and C2a units? O Protectin (CD59) O Lectin O C1 Esterase Inhibitor O Decay Accelerating Factor (CD55) O MASP
Which of the following is TRUE about interferons? Each interferon is specific for one type of virus None of the other four answers are true of interferons They are a type of antibody molecule They are chemical messenger molecules sent from virus-infected cells to neighboring cells to block virus replication They are an example of specific cell- mediated immunity
Which of the following is false about complement? O Complement kills pathogens by inducing cell lysis Complement are a series of proteins that circulate through the blood Complement is produced by the kidney Complement enhances phagocytosis. оооо
Which of the following complement components are generated during the classical pathway and bind independently to the membrane surface promoting immune adherence and opsonizing effects? C3b O C3d O C1q O C2
Each is an effect of complement activation EXCEPT interference with viral replication. bacterial cell lysis. increased blood vessel permeability opsonization. increased phagocytic activity.
Write TRUE is the statement is True, otherwise write FALSE and explain why the statement is False. The complement system involves a set of genes that distinguish foreign cells from body cells. The alternative complement activation pathway involves the cleavage of C5 to form C9. The type of interferon present late in an infection is gamma interferon. Interferons cause muscle aches, chills, and fever. Toll-like receptors act to cause phagocytic chemotaxis. Lymphocytes are large agranulocytes. Opsonization occurs when a phagocyte’s pseudopods surround a microbe and fuse to form a sac. Defensins are antimicrobial peptides of the first line of defense.