11 Bio Homeostasis and Feedback Mechanisms Quiz

What is homeostasis?

• The maintenance of a relatively stable internal environment in the body

• The process of increasing body temperature

• The ability to detect light

• The change in blood pressure

What role do effectors play in negative feedback loops?

• Detect changes in the environment

• Reverse the direction of the change to achieve equilibrium

• Send signals to the modulator

• Detect light

Which system is key in maintaining homeostasis?

• Digestive system

• Nervous and endocrine systems

• Respiratory system

• Muscular system

What is the function of thermoreceptors?

• Detects light

• Detects changes in blood pressure

• Detects temperature change

• Detects chemicals

What is negative feedback?

• A response that increases the original stimulus

• A response that decreases or removes the original stimulus

• A process that detects light

• A method to increase body temperature

What is the main function of the hypothalamus in thermoregulation?

• It generates heat via shivering.

• It acts as the control center for thermoregulation.

• It increases basal metabolic rate.

• It contains thermoreceptors.

Which of the following is a characteristic of ectotherms?

• Generate heat internally using metabolic processes.

• Temperature changes based on external environment.

• Have temperature-sensitive cells in the hypothalamus.

• Maintain a constant body temperature.

How does heat transfer occur through conduction?

• Through electromagnetic waves.

• Through the movement of a liquid or gas.

• Through physical contact with another object.

• Through the conversion of water from liquid to gas.

What role do blood vessels play in thermoregulation?

• They generate heat via shivering.

• They act as the control center for thermoregulation.

• They help regulate heat exchange through vasodilation and vasoconstriction.

• They increase basal metabolic rate.

What is the function of thyroxine (T4) in the body?

• It detects internal body temperature.

• It increases basal metabolic rate.

• It contains thermoreceptors.

• It generates heat via shivering.