Some Complement Proteins _______

Question

Some complement proteins _______.
A) destroy macrophages and neutrophils
B) promote production of plasma cells
C) reset the body's thermostat, causing fever
D) stimulate phagocytosis and inflammation

Accepted Answer

Complement proteins stimulate phagocytosis (the engulfing and destruction of pathogens by immune cells) and inflammation, specifically by attracting immune cells to the site of infection. They also help to initiate the formation of a membrane attack complex (MAC) which can directly destroy bacteria and other pathogens. Complement proteins do not destroy macrophages and neutrophils (immune cells) but rather rely on their actions to help clear infections. Additionally, they do not directly promote the production of plasma cells (which produce antibodies) or reset the body's thermostat to cause fever.