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.
Other Factors That Play a Role in Homeostasis. PH balance and good bacteria is the answer to the question how does the digestive system maintain homeostasis. A number of other factors also play roles in homeostasis within the digestive system as well as other systems in the body. 1. Temperature. Many organs in your body help regulate its temperature.