Question

_________________ is the main contaminant present in the resultant free extract from cells.

(a) Chemicals

(b) Simple sugars

(c) Lipids

(d) Nucleic acids

This question was addressed to me in an online interview.

The above asked question is from Isolation of Enzymes in section Enzyme Extraction and Isolation of Enzyme Technology

Answer 1

The correct answer is (d) Nucleic acids

To explain: The resultant cell free extract obtained from extraction procedures possess nucleic acids, lipids, simple sugars and so on. But nucleic acid is the major contaminant and care should be taken to remove it from the system.