Blood Glucose Regulation Grade 9 IGCSE

What is the primary function of insulin in blood glucose regulation?

• To increase blood glucose levels

• To decrease insulin sensitivity

• To promote the breakdown of glucose in cells

• To promote the uptake of glucose into cells and inhibit the production of glucose in the liver.

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How does glucagon help regulate blood glucose levels?

• By stimulating the liver to convert stored glycogen into glucose and release it into the bloodstream.

• By inhibiting the pancreas from releasing insulin

• By increasing the absorption of glucose in the intestines

• By promoting the breakdown of muscle tissue for glucose production

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Explain the role of the liver in maintaining blood glucose levels.

• The liver produces insulin to regulate blood glucose levels

• The liver converts glucose into fat for energy storage

• The liver stores excess glucose as glycogen and releases glucose into the bloodstream as needed.

• The liver breaks down proteins to release glucose into the bloodstream

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Why is the pancreas important in blood glucose regulation?

• The pancreas controls blood glucose levels by releasing adrenaline

• it secretes insulin and glucagon, which help maintain the balance of glucose in the blood.

• The pancreas regulates blood glucose by producing red blood cells

• The pancreas plays a role in blood glucose regulation through the production of bile

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Describe the negative feedback mechanism involved in blood glucose regulation.

• The release of insulin by the liver in response to high blood glucose levels

• the release of insulin by the pancreas in response to high blood glucose levels.

• The release of glucagon by the pancreas in response to low blood glucose levels

• The release of adrenaline by the pancreas in response to high blood glucose levels

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What happens to blood glucose levels when insulin is released?

• Blood glucose levels remain the same

• Blood glucose levels decrease

• Blood glucose levels increase

• Blood glucose levels fluctuate

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In what situation is glucagon released to increase blood glucose levels?

• When blood glucose levels are low

• When blood glucose levels are high

• During fasting

• After a meal

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Explain how insulin and glucagon work together to maintain blood glucose homeostasis.

• Insulin inhibits glucose uptake by cells, while glucagon promotes glucose storage in the liver.

• Insulin stimulates the liver to release stored glucose, while glucagon promotes glucose uptake by cells.

• Insulin and glucagon have no impact on blood glucose levels.

• Insulin promotes glucose uptake by cells, while glucagon stimulates the liver to release stored glucose.

Tags

NGSS.HS-LS1-3