Question 7 (0.75 points) Process by which a mechanism is activated to restore conditions to their original state is: a) negative thermoregulation b) negative feedback c) positive thermoregulation d) positive feedback

The correct answer is **b) negative feedback**.<br /><br />Negative feedback is a regulatory mechanism in which a change in a system triggers a response that counteracts the initial change, restoring the system to its original state or set point. Think of a thermostat controlling room temperature. If the temperature drops too low, the thermostat triggers the heater to turn on, raising the temperature back to the set point. Conversely, if the temperature gets too high, the thermostat triggers the air conditioning to cool the room back down.<br /><br />The other options are incorrect:<br /><br />* **a) negative thermoregulation:** While related to temperature regulation, this term doesn't specifically describe the restorative process. Negative feedback *is* the mechanism used in negative thermoregulation.<br />* **c) positive thermoregulation:** This isn't a standard term. Thermoregulation generally relies on negative feedback.<br />* **d) positive feedback:** Positive feedback amplifies a change, driving the system further away from its original state. Childbirth and blood clotting are examples of positive feedback.<br />