Lloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. which action should lloyd recommend to his partner if heating must continue?
wear safety goggles while looking into the opening of the test tube.
cover the opening of the test tube so that no materials can boil out of it.
move the test tube so that the opening is pointing away from all students.
put the test tube in a hot water bath so that no water can enter its opening.

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

I’m stuck on this question cuz i’m stupid sksksksk

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials