AP PSYCHOLOGY

Detailed explanation-1: -Homeostasis has become the central unifying concept of physiology and is defined as a self-regulating process by which an organism can maintain internal stability while adjusting to changing external conditions.

Detailed explanation-2: -A constant internal environment has to be maintained in an organism. This maintanance is done by homeostasis. Various factors like pH, temperature, pressure, electrolyte concentration, water balance, etc., is maintained by homeostasis. This is done with respect to the changing external environment.

Detailed explanation-3: -Homeostasis is the ability of the body to maintain a stable internal environment despite a changing external environment. Homeostasis is maintained primarily through negative feedback, when a response to a stimulus keeps a variable close to a set value.

Detailed explanation-4: -The correct option is C homeostasis. Homeostasis is the process by which organisms maintain a constant internal environment inspite of changes in the outside environment. Thermoregulation is the mechanism of maintenance of the body temperature within an optimum range.

Detailed explanation-5: -Homeostasis can be defined as ‘preserving constancy in the internal environment’.