_____ provide defense against extracellular antigens like bacterial toxins and bacterial cells.

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Quizplus · Accepted Answer

Antibodies are proteins produced by the immune system in response to the presence of antigens (foreign molecules). They play a crucial role in defending against extracellular pathogens, such as bacteria, by binding to and neutralizing their toxins or by promoting their destruction by other immune cells. Erythrocytes (red blood cells) transport oxygen and carbon dioxide, but do not have a role in the immune response. Histamines are involved in inflammation and allergic reactions but are not antibodies. Neutrophils are a type of white blood cell that can engulf and destroy bacteria through phagocytosis, but they do not produce antibodies.

_____ Provide Defense Against Extracellular Antigens Like Bacterial Toxins and Bacterial