Signals are transduced from the outside of cells and across the plasma membrane in all of the following ways EXCEPT

In the ribonuclease experiment, 

Which of the following enzymes does NOT cut DNA to change its topology?

Which modification on a lysine is involved in transcription, nuclear transport, apoptosis, and cell cycle progression, but not protein degradation?

In Hoogsteen base pairing,

B-form DNA contains ________ base pairs per turn. 

A protein binds to histones, proline-rich sequences, and NAD. Which motifs and domains could it contain?

To increase dsDNA-binding specificity, proteins use

Standard DNA bases are typically in the ________ conformations in the double helix.

If guanine makes up 20% of the nucleotides in a DNA sample, what percentage of the nucleotides will be adenine?