Allolactose, an isomer of lactose, is formed in small amounts from lactose. An E. coli cell is presented for the first time with
the sugar lactose (containing allolactose) as a potential food source. Which of the following occurs when the lactose enters the cell?A) The repressor protein attaches to the regulator.B) Allolactose binds to the repressor protein.C) Allolactose binds to the regulator gene.D) The repressor protein and allolactose bind to RNA polymerase.E) RNA polymerase attaches to the regulator.
RNA polymerase must bind to the promoter, and the repressor must be inactive. Allolactose, an isomer of lactose, is formed in small amounts from lactose. An E. coli cell is presented for the first time with the sugar lactose (containing allolactose) as a potential food source.
Fiber is made out of cellulose. Our body doesn't synthesize an enzyme that digests cellulose(cellulase) that's why we can't metabolize it. fiber is good because it reaches the colon undigested and helps the intestinal fauna and can even prevent colon cancer
an organism can live without the ability to reproduce, and reproductive organs can actually be removed with little affect on an organisms health. we cant live without the other options though.
The tiny holes in the cell walls of plants that allow for the passing of materials are called the plasmodesmata. The correct option among the different options given in the question is the second option. Plasmodesmata are actually very small or rather microscopic channels that traverse the cell walls of the plant cells.
