Which of the following is true of antigens? Which of the following is true of antigens? Antigens are produced by the body in response to a foreign invader. Antigens are limited to one antigenic determinant per antigen molecule. Antigens are substances that activate the adaptive immune response. Antigens are typically composed of nucleotides.

Antigens are substances that activate the adaptive immune response.

Explanation:

An antigen is a molecule or a substance that activates or stimulates immune response most especially the adaptive immune system made up of lymphocytes e.g B cells and T cells. The stimulation of lymphocytes leads to  the production of antibodies.

Antigens could either be hetero-antigen (foreign) or auto-antigen (self). Hetero-antigens could be substances produced by microorganisms or certain foods, while auto-antigens are produced in the body. Although the body recognizes auto-antigens, but in autoimmune disorders the body doesn't recognize auto-antigens.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.