Ascientist working in a lab wants to determine the approximate ph of a filtered biological solution using a visual test. which tool should the scientist use to measure ph?

He can use
a) Universal Indicator
b) Methyl Orange
c) Screened Methyl Orange
d) Phenophthalein
e) Bromothyl Blue
f) Litmus paper
alternatives tumeric power solution and purple cucumber solution

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.