During intense exercise our muscles produce lactate and hydrogen ions.Which of the following molecules would be affected by the accumulation of hydrogen ions?
A) cholesterol in the plasma membrane
B) glucose molecules in the adipose tissue
C) DNA in the nucleus
D) the proteins actin and myosin
E) phospholipids in the membrane

Question

Quizplus · Accepted Answer

The accumulation of hydrogen ions would lower the pH in the muscle cells, which would affect the proteins actin and myosin. This can contribute to muscle fatigue and decreased contractile ability. The other molecules listed would not be directly affected by changes in pH.

During Intense Exercise Our Muscles Produce Lactate and Hydrogen Ions