Los anticuerpos o inmunoglobulinas, son proteínas que cumplen la función A) de defensa. B) de transporte. C) contráctil. D) enzimática. E) de reserva.

The correct answer is A) defending.

Explanation:

Antibodies correspond to proteins of the immune system which recognize and neutralize foreign agents to the body (eg viruses, bacteria, toxins). They are produced by type B lymphocytes. By recognizing foreign agents (antigen) the antibodies circulate in the blood attacking them and generating immunity, before a new attack by the same agent.

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.