Feedback loop and glucoregulation

What is the primary purpose of a negative feedback loop in biological systems?

• To amplify changes in the system
• To restore balance or homeostasis
• To create random fluctuations in function
• To disrupt equilibrium

Which organ plays a major role in regulating blood glucose levels?

• Kidney
• Stomach
• Liver
• Heart

What hormone is released when blood glucose levels are too high?

• Glucagon
• Adrenaline
• Insulin
• Cortisol

How does insulin lower blood glucose levels?

• By causing the liver to release glucose
• By promoting the uptake of glucose into cells
• By breaking down glycogen into glucose
• By stimulating the production of glucagon

What happens to glucagon levels when blood glucose is low?

• They decrease
• They stay the same
• They increase
• They fluctuate randomly

What role does the pancreas play in glucose regulation?

• It produces insulin and glucagon
• It stores glucose for future use
• It absorbs glucose directly from food
• It converts glucose into proteins

Which of the following best describes homeostasis?

• The body’s ability to amplify external changes
• The maintenance of a stable internal environment
• The process of random physiological adjustments
• The mechanism of increasing metabolic rate indefinitely