Texas Medical Assistant Certification Practice Test

What is the role of antibodies in the body?

1. Transport nutrients

2. Store energy

3. Fight infections

4. Assist digestion

The correct answer is: Fight infections

Antibodies play a crucial role in the immune system by fighting infections. These specialized proteins are produced by B cells in response to pathogens such as bacteria, viruses, and toxins. Once antibodies recognize a specific antigen, they bind to it, which can neutralize the pathogen directly or mark it for destruction by other immune cells. This process is essential for protecting the body from diseases and infections, enabling a more effective and coordinated response to pathogens. Transporting nutrients, storing energy, and assisting digestion are functions carried out by other components in the body. Nutrients are primarily transported via the bloodstream with the help of different proteins and cells, while energy storage is managed by fat cells and glycogen. Digestive processes rely on enzymes and various digestive organs rather than antibodies.