Question 30 , why is it B , it can also be A right? and i don't get what's the difference in both PHs
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w05_qp_1.pdf
An active muscle produces a lot of carbon dioxide (an acidic gas) which decreases the pH. This is the basis of the Bohr shift.