IB Biology HL 3.3.3 Blood Glucose Regulation
Practise analysing HL blood-glucose data, pancreatic hormone pathways, diabetes treatments and evidence for experimental interventions.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Analyse insulin and glucagon feedback from blood-glucose and hormone data.
- Evaluate diabetes interventions using control groups, glucose trends and treatment evidence.
- Explain pancreatic hormone secretion and tissue glucose turnover from experimental data.
D3.3.3—Blood glucose regulation question 1
[Maximum number: 7]
Living organisms have mechanisms for preventing or reducing change.
Describe the mechanisms used to keep blood glucose levels within narrow limits in humans.
a. pancreas cells monitor blood glucose concentrations;
b. glucagon secreted by alpha cells and insulin be beta cells;
c. glucagon/insulin/hormones secreted into/transported by bloodstream;
d. insulin secreted when glucose concentration rises/is high;
e. insulin stimulates uptake of glucose by liver/muscle/body cells;
f. insulin stimulates conversion of glucose to glycogen (in liver/muscle cells);
g. insulin stimulates body cells to use glucose instead of fat in cell respiration;
h. glucagon secreted when glucose concentration falls/is low;
i. glucagon stimulates breakdown of glycogen to glucose (by liver/muscle cells);
j. negative feedback (is used to regulate blood glucose concentration);
7
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