One of the key discoveries Avery's work contributed to the discovery of the genetic material was that enzymes that break down DNA made the tranforming principle inactive. Enzymes that break down proteins or RNA had no effect on the transforming material.   True   False

Several experiments aided the discovery of DNA being the inheritable material. Which of the following experiments clearly demonstrated DNA, not protein, was the inheritable material?

Suppose you have been directed to find new enzymes to use in the breakdown of wood in order to process biofuel (switchgrass, for example). Suppose you wanted to use fungal or bacterial DNA from the environment in order to do so. DNA can be unwound from the double stranded double helix into single strands, amplified, separated on gels by size, stained with dyes. It can be mutated by a variety of means. It can be sequenced. Describe one or more of the ways that you might manipulate DNA towards the stated goal. Relate the technology you plan to utilize to the structure of DNA. (You can break this into multiple posts, as multiple procedures might be used).

The drug Ciprofloxacin hydrochloride (Cipro) blocks bacterial DNA gyrase enzyme needed to counteract excessive twisting of DNA that occurs when circles of DNA are unwound to be copied into DNA or RNA.  Why doesn’t this drug kill human cells?