DNA has a negative charge because of the phosphate ions in its chemical backbone.
Homeostatic regulation involves three parts or mechanisms: 1) the receptor, 2) the control center and 3) the effector. The receptor receives information that something in the environment is changing. The control center or integration center receives and processes information from the receptor.
Regulation of Body Temperature â³ Vitally important because even slight shifts can disrupt the rates of metabolic reactions â³ Maintenance of a stable temperature requires that the amount of heat the body loses be balanced by the amount it produces â³ Skin plays a key role in the homeostatic mechanism that regulates body temperature