Which Lab Procedure Is the Best to Use to Determine

Multiple Choice

Which lab procedure is the best to use to determine whether a newly discovered single-celled organism is prokaryotic or eukaryotic?

A) Search for the presence of membrane-bound structures within the cell, using transmission electron microscopy.
B) Determine the molecular makeup of the organism's cell membrane, using chemical analysis.
C) Stain cells with a ribosome-specific stain, and then use light microscopy to assess whether ribosomes are present or absent in the cells.
D) Use biochemical methods to determine whether the organism has a cell wall and is also capable of carrying out photosynthesis.
E) Use analytical techniques to determine the number of genes encoded in the organism's DNA.