Final answer:
The correct examples of antigens are bacteria, viruses, and pollen. Antigens are non-self molecules that can initiate an immune response, and antibodies bind to these antigens to potentially neutralize them. Proteins are particularly effective antigens due to their complex structure.Thd correct option is 1.
Step-by-step explanation:
The correct list of examples of antigens would be the first option: bacteria, viruses, and pollen. Antigens are molecules that the immune system identifies as non-self and thus potentially harmful.
They can be proteins, carbohydrates, glycoproteins, glycolipids or other classes of organic molecules.
Examples include foreign proteins on the red blood cells during a transfusion, which can trigger an immune response; and components like pollen, which may elicit allergic reactions.
Antibodies are specialized proteins produced by the immune system that recognize and bind to antigens. This interaction may lead to the destruction of the pathogen carrying the antigen.
A more complex structure of an antigenic molecule, like that of proteins, makes it more effective in stimulating both humoral and cellular immunity.
Carbohydrates, although they can activate immune responses, tend to be less effective as antigens and typically only stimulate humoral immunity.The correct option is 1.