Question

ATP is produced by cellular respiration in your human body cells. There are a variety of enzymes that work to produce ATP, but one of those enzymes is called phosphofructokinase-1. This enzyme is sensitive to blood acidity. Blood can become more acidic if a patient is in respiratory distress.
What is the variable affecting enzyme function?

Answer 1

The variable affecting enzyme function, in this case, is the pH level of the blood, which is related to blood acidity. Phosphofructokinase-1 (PFK-1) is sensitive to changes in pH, and an increase in blood acidity (lower pH) can influence the enzyme's activity, potentially affecting the rate of ATP production during cellular respiration.