In Meselson and Stahl’s experiments, bacteria were grown in a medium containing “heavy” nitrogen (15N) and then they were transferred to a medium containing 14N for two additional rounds of replication.  The DNA was isolated and centrifuged to separate the DNA strands by weight.  Which of the figures below would be expected if the DNA is replicated by a semiconservative mechanism?

Initiation factor eIF2 is an important factor for initiation of translation on eukaryotic ribosomes because ________.

In order to determine if DNA pol III can be released and recycled to synthesize multiple Okazaki fragments, an experiment was performed with a donor plasmid, where DNA pol III synthesized a circular fragment, and two possible acceptor plasmids where the DNA pol III could bind if released and recycled.  One plasmid contained a primer plus a clamp, the other contained just a primer.  The donor and acceptor plasmids are shown below (note that for this portion of the experiment, the B-clamp and primer are on M13Gori plasmid).  The result of the experiment was _____.  

This technique typically requires samples to be primarily fixed (e.g. in a glutaraldehyde solution) and then post-fixed in a different fixative (e.g. osmium tetroxide).

This technique allows for high resolution of 3D images.

The answer to this question is “325”. [BLANK-1]

How should citations appear when discussing a source with no clear author?

If no author is identified for a source, what should you use in place of the author’s name?

How should you cite a work with four or more authors?

In the figure above, the first phase labeled with the letter “a”  reflects a time of no microbial growth but one which cells are metabolically active.  What is this growth phrase called?