2. You have identified a new operon in E. coli. It enables E. coli to transition to metabolize a new sugar called Sweetose. Sweetose is a disaccharide that needs a special enzyme to cut it

into monosaccharides one of which is glucose and one of which is fructose. Sweetose

obviously needs to enter the cell to be metabolized. The operon you discovered encodes the

two proteins needed to both get Sweetose into the cell and to metabolize it to glucose and

fructose.

You also find that Sweetose, upon entering the cell relieves repression of the operon.

You also find that fructose inhibits the Sweetose permease. Using drawings and words,

describe how this operon functions. Your drawings and text should describe the critical

genes (and their proteins) involved, the critical structural features of the operon, and how

the various compounds control the workings of the operon and Sweetose metabolism.

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa.which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.