Which of the following is a problem that resulted from the Green Revolution? A. Many countries that once had to import food now export food.
B. Pollen from genetically modified crops has entered organic
farmland.
C. Areas that previously suffered from a lack of food now have higher
food production
O D. Many local traditional crop varieties have become threatened by
extinction.

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?

Emmet didn’t want to weed the garden. he put off the task toward the end of the day. he even tried to get his sister to do the job. what type of goal orientation did emmet display toward weeding the garden?

Some substances but not other can cross the (blank) membrane of a cell