Homeostasis Quiz (Blood Glucose & pH)

Which hormone lowers blood glucose levels?

• Glucagon

• Insulin

• Adrenaline

• Cortisol

Which organ mainly regulates blood glucose levels?

• Liver

• Pancreas

• Kidneys

• Lungs

What is the main action of glucagon?

• Increases glucose uptake into cells

• Converts glucose into glycogen

• Raises blood glucose levels

• Lowers blood glucose levels

Which organ helps regulate blood pH by removing carbon dioxide?

• Heart

• Liver

• Lungs

• Pancreas

What happens when carbon dioxide levels increase in the blood?

• A. Blood becomes more alkaline

• B. Breathing rate decreases

• C. Breathing rate increases

• D. Glucose levels rise

Which of the following best describes negative feedback?

• A. A response that increases the original change

• B. A response that reduces the original change

• C. A response that stops all hormone release

• D. A response that has no effect

Which combination correctly describes the response to low blood glucose?

• Insulin release → glucose uptake increases

• Glucagon release → glycogen broken down in liver

• Insulin release → glycogen broken down

• Glucagon release → glucose stored as glycogen

Why is bicarbonate important in blood pH regulation?

• It increases oxygen levels

• It acts as a buffer to neutralise acids

• It breaks down glucose

• It increases carbon dioxide levels

Which statement best explains how the lungs help maintain blood pH?

• They release bicarbonate into the blood

• They remove carbon dioxide, reducing acidity

• They store glucose as glycogen

• They produce insulin

Which of the following best describes the interaction between lungs and kidneys in pH regulation?

• Both respond at the same speed and perform the same function

• Lungs regulate bicarbonate, kidneys regulate oxygen

• Lungs act quickly on CO₂, kidneys provide slower control of acids and bases

• Kidneys act quickly, lungs act slowly