The answer is c02 regulation, the carbonic acid bicarbonate buffer regulation, the H+ regulation and gas exchange. The following regulations are all completed through the circulatory, excretory and respiratory systems which is part of one huge function that is called homeostasis. Homeostasis is the predisposition to repel alteration in order to uphold a even comparatively constant internal situation.
Conjugation is the process by which one bacterium transfers genetic material to another through direct contact. The answer is Conjugation
<span> parathyroid hormone (PTH) </span><span>increases osteoclast activity to release more calcium ions into the bloodstream.
In short, Your Answer would be Option C
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T cell receptor, Cytotoxic T Cell, CD4, Antigen, Bacterium,
B – cell, Cell mediated response, Class II MHC, Cytokines, and Humoral Response
are the components for the activation of a helper t cell by a dendritic cell.