Diabetes and Homeostasis

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 

• Positive Feedback Response

• Negative Feedback Loop 

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According to the feedback loop, what does high blood sugar promote?

• Insulin Release

• Glucagon Release

• Insulin Uptake

• Glycogen Uptake

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How is homeostasis maintained if blood glucose levels rise?

• Alpha cells secrete glucagon, which causes an increased rate of glucose transport into cells

• Beta cells secrete insulin, which causes a decreased rate of glucose transport into cells

• Alpha cells secrete glucagon, which causes a decreased rate of glucose transport into cells

• Beta cells secrete insulin, which causes an increased rate of glucose transport into cells

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Failure to maintain homeostasis could result in:

• lack of internal balance

• eventual death

• difficulty carrying on metabolism 

• all three

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Which of the following is a result of negative feedback in blood sugar regulation?

• Increased blood sugar levels after eating

• Decreased blood sugar levels after insulin release

• Increased heart rate during exercise

• Increased body temperature during fever

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When your blood sugar is too high, what hormone is released?

• glucagon

• insulin

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Which hormone is primarily responsible for lowering blood glucose levels?

• Glucagon

• Insulin

• Adrenaline

• Cortisol

Answer explanation

Insulin is the hormone primarily responsible for lowering blood glucose levels by facilitating the uptake of glucose into cells, thus reducing blood sugar levels. Glucagon, adrenaline, and cortisol have the opposite effect.

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What is the role of glucagon in blood sugar regulation?

• To lower blood sugar levels

• To increase blood sugar levels

• To maintain constant blood sugar levels

• To convert glucose to glycogen

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How does the body respond to high blood sugar levels?

• By releasing glucagon

• By releasing insulin

• By increasing heart rate

• By decreasing body temperature

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What hormone is released when blood sugar levels are low?

• Insulin

• Glucagon

• Adrenaline

• Thyroxine

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