Microbiology The percentage of hemoglobin saturated with oxygen will increase when which of the following occurs? A The aerial PCO2 is increased B The hemoglobin concentration is increased C The temperature is increased D The aerial PO2 is increased 💡 Explanation The percentage of hemoglobin saturated with oxygen will increase when which of the following occurs? ✓ Correct Answer: D. The aerial PO2 is increased