WGU BIOCHEMISTRY 785 FINAL PAPER 2026 FULL Q&A STUDY GUIDE GRADED A+

WGU BIOCHEMISTRY 785 FINAL PAPER
2026 FULL Q&A STUDY GUIDE GRADED A+


◉Which letter depicts a pulse oximetry measurement of blood with
an O2 saturation of 50%?


Letter C


Letter A


Letter B


Letter D. Answer: Letter D


The solid line represents the hemoglobin curve and the O2
saturation at 50% would be the point halfway up the Y-axis (50%)


◉What is happening to the pH of the muscles due to aerobic
exercise?


CO2 increases from aerobic metabolism, thus the pH of the muscles
decreases.

, CO2 increases from aerobic metabolism, thus the pH of the muscles
increases.


CO2 decreases from aerobic metabolism, thus the pH of the muscles
decreases.


CO2 decreases from aerobic metabolism, thus the pH of the muscles
increases.. Answer: CO2 increases from aerobic metabolism, thus the
pH of the muscles decreases.


During aerobic exercise, CO2 is released by the tissues and as a
result the CO2 increases. This, in turn, results in the CO2 combining
with H2O to produce a bicarbonate ion and a proton (H+). This
increase in protons, thus lowers the pH.


◉Identify the factors that favor the deoxygenated form of
hemoglobin.


Excess protons, high carbon dioxide


Excess protons, low carbon dioxide


Few protons, low carbon dioxide