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Homeostasis · Paper 1 — Free Biology SL Practice Questions

1FoundationMCQMechanisms of temperature, pH, and water balance1 markPaper 1~2 min
In metabolic acidosis, plasma pH falls and bicarbonate concentration decreases. Which of the following correctly describes the primary mechanism by which breathing rate increases?
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Solutions

2MasteryMCQRegulation of blood glucose levels1 markPaper 1~2 min
A patient with type 1 diabetes mellitus has a fasting blood glucose concentration of 18.0 mmol L−118.0 \text{ mmol L}^{-1}. She self-administers an appropriate dose of insulin. Which statement best describes the immediate mechanism by which insulin lowers blood glucose concentration in her liver cells?
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Solutions

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