The majority of exotoxins are A-B toxins, which are composed of two polypeptide subunits referred to as A and B. The B component functions to bind or attach to the host cell, whereas the A component exerts its toxic effects on the cell. This activity asks you to place the images in the correct order as they occur when an A-B toxin interacts with the host cell. Drag the images below into boxes to indicate the correct order of events illustrating the mechanism of action of an A-B exotoxin.