Interpreting stable isotopic fractionation depends on the fact that most enzymes preferentially bind ________ isotope substrates over ________ isotope substrates.
A) nonradioactive / radioactive
B) light / heavy
C) heavy / light
D) radioactive / nonradioactive

Question

Quizplus · Accepted Answer

Stable isotopic fractionation is based on the fact that most enzymes preferentially bind lighter isotopes over heavier isotopes. Therefore, choice B - light / heavy is the correct answer. The other choices are incorrect as they do not accurately reflect the principle of isotopic fractionation.

Interpreting Stable Isotopic Fractionation Depends on the Fact That Most