The complement system consists of over 30 different proteins that work together in a cascade fashion to protect us against infectious agents. One way this system is activated is via the __________, when complement proteins are activated by directly interacting with a pathogen.ANSWERclassical pathwaycomplement pathwaylectin pathwayalternative pathway

Select all that applyWhat can activate complement?Multiple select question.Pathogen surface moleculesMBL proteinPhagocytosis

The Alternative and Classical complement pathways differ in that ONLY the Classical pathway ____.1 pointuses the breakdown products of C3 and C5 as signals to activate other elements of the immune systemattaches proteins to the surface of pathogen that promote phagocytosisconstructs a pore with variable number of C9 moleculesresults in the breakdown of C2 and C4begins with the stabilization of the natural breakdown product of C3

Select all that applyWhich of the following are true of complement?Multiple select question.It is the main defense system of invertebrates.It is comprised of approximately 30 proteins.Its component proteins usually circulate freely in the blood plasma in inactive form.It is comprised of a group of proteins that are normally produced in all of the potential routes of entry for microbes.

What functions can complement proteins perform?Group of answer choicesprovide immunity in response to immunizationstore "memories" of specific antigens for months or yearsbind Fc receptorscoat invading microbesattract phagocytes to the site of infectioninsert themselves into the foreign cell's plasma membraneamplify the inflammatory response

Which of the following are potential outcomes following complement activation?SELECT ALL THAT APPLYGeneration of antimicrobial peptidesOpsonization of pathogens for phagocytosisInduction of a memory response by B and T cellsApoptosis of virus-infected cellsCytolysis of pathogens through formation of the membrane attack complex (MAC)Induction of an inflammatory response