Homeostasis Quiz

What is the definition of homeostasis?

• The ability of an organism to change its external environment

• The maintenance of a stable internal environment

• The process of increasing body temperature

• The breakdown of glucose for energy

Which term describes the ideal state where the body maintains its internal environment?

• Metabolism

• Homeostasis

• Catabolism

• Diffusion

Which of the following is an example of negative feedback?

• Blood clotting

• Childbirth contractions

• Regulation of blood glucose levels

• Both a and b

What is the role of insulin in homeostasis?

• Raises blood sugar

• Lowers blood sugar

• Increases heart rate

• Produces red blood cells

Which organ regulates blood glucose levels by producing insulin and glucagon?

• Liver

• Pancreas

• Kidney

• Heart

What is the main function of a feedback loop in homeostasis?

• To change external conditions

• To amplify all body processes

• To maintain internal stability

• To stop body functions permanently

In thermoregulation, how does the body respond to overheating?

• Vasoconstriction and shivering

• Vasodilation and sweating

• Increase in glucose levels

• Secretion of glucagon

What are the three key components of a homeostatic control system?

• Receptor, control center, effector

• Sensor, catalyst, feedback

• Enzyme, hormone, cell

• Stimulus, neuron, gland

What does glucagon do when blood glucose levels are low?

• Converts glucose to glycogen

• Breaks down glycogen into glucose

• Lowers blood glucose further

• Increases insulin secretion

How does negative feedback help maintain homeostasis?

• By stopping all responses to stimuli

• By amplifying the initial change

• By reversing or reducing changes in the body

• By constantly increasing hormone production