Question

Choose the incorrect statement with respect to the membranes used for adhering of bacterial cells onto them.

(a) Nitrocellulose membranes were preferred earlier

(b) They bind DNA very efficiently

(c) They can be handled easily without breakage

(d) They are inflammable

This question was posed to me in an international level competition.

This interesting question is from Database Screening and Screening by Nucleic Acid Hybridisation topic in division Screening Libraries of Genetic Engineering

Answer 1

The correct choice is (c) They can be handled easily without breakage

To elaborate: Nitrocellulose membranes were preferred earlier. They bind DNA very efficiently and are brittle thus can’t be handled efficiently without breaking. They are inflammable.