Q3 - Reading Lung and Kidney Disease from Blood Gas Values
Blood pH must be tightly controlled. To achieve this, the lungs excrete CO from the body and the kidneys alter 2 3- blood HCO levels. The blood chemistry of healthy people (H) and people with diseases i, ii, and iii was analysed, and falls in the ranges shown.
Using the information and data, determine which of the statements are true or which are false.
A. Disease i makes blood too acidic.
B. Disease ii involves increased gas exchange in the lungs.
C. Disease ii involves harmful changes in kidney function.
D. Vomiting can induce the phenotype seen in iii.
Question reproduced from IBO 2017, Theoretical Exam B, licensed under CC BY-NC-SA 4.0 - attributed to the International Biology Olympiad. Open the full exam PDF · Official answer key & worked solutions