ASCP Medical Laboratory Technician (MLT) Practice Exam 2025 - Free MLT Exam Questions and Study Guide

Antibodies are proteins produced by the immune system in response to the presence of antigens, which are foreign substances such as bacteria, viruses, and toxins. The primary function of antibodies is to recognize and bind to specific antigens, facilitating their neutralization or destruction by other immune cells. When an antigen enters the body, it triggers an immune response, prompting the production of specific antibodies tailored to that particular antigen.

This relationship is crucial for the body’s defense mechanisms. The generation of antibodies occurs as part of the adaptive immune response, which provides the body with increased specificity and memory for previously encountered pathogens. Subsequent exposures to the same antigen can lead to a quicker and more effective response, thanks to these antibodies.

The other choices do not accurately represent the relationship between antibodies and antigens. Antibodies do not destroy antigens without binding; they need to attach to antigens to initiate destruction. Additionally, antibodies do not neutralize all substances in the blood, as their action is specific to the antigens they are designed to target. Lastly, antigen production does not depend on antibodies; rather, the presence of antigens stimulates the production of antibodies.