A Level Biology Practice Exam 2025 – All-in-One Study Guide to Excel in Your A Levels!

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What are immunoglobulins primarily responsible for in the body?

Producing hormones for metabolism

Forming antibodies to neutralize pathogens

Immunoglobulins, also known as antibodies, play a crucial role in the immune response by specifically recognizing and binding to antigens, which are foreign substances like bacteria and viruses. This binding helps to neutralize pathogens and marks them for destruction by other immune cells. The primary responsibility of immunoglobulins is indeed to form antibodies that can deactivate pathogens, preventing infection and aiding in the overall defense mechanism of the body.

While regulating the immune system's response is an important aspect of immunity, it is primarily the function of different cells and signaling molecules rather than the immunoglobulins themselves. Therefore, the high specificity of immunoglobulins in targeting and neutralizing pathogens makes them essential for the body's adaptive immune response.

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Transporting oxygen through the bloodstream

Regulating the immune system's response

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