Stable isotope probing (SIP) is a method that
A) causes cells that hybridize with a fluorescent probe to fluoresce under UV light.
B) compares the isotopic ratios of different compounds in the environment to determine whether they are of biological or geological origin.
C) uses substrates containing heavy isotopes to label the DNA of organisms that use those substrates.
D) compares the transcription of specific isotope labeled genes under different conditions.

Question

Quizplus · Accepted Answer

Stable isotope probing (SIP) uses substrates containing heavy isotopes to label the DNA of organisms that use those substrates. This allows for the identification and quantification of active microorganisms in complex environmental samples, as only those that incorporate the labeled substrate will be detected by subsequent molecular analysis.

Stable Isotope Probing (SIP) Is a Method That