Order the correct sequence of events for the tryptophan repressible operon. the starting point is that tryptophan levels are low. rank events from first to last. do not overlap any events.

Synthesis mRNA of the operon depends on the repressor that blocks the transcription when bound by tryptophan that acts as a co-repressor.

The repressor interacts with inverted repeats at the major groove of the operator, thus allowing it to be fixed.

When there is few tryptophan, the repressor is inactive and does not attach to the operator. The RNA polymerase will bind to the promoter and transcribe the trp structural genes E, D, C, B, A (enzymes that make it possible to synthesize tryptophan).

Chorismate → Anthranilic acid → Phosphoribosyl-antranilate PRA Carboxyphenylamino-deoxyribulose phosphate CDRP → Indole-glycerol phosphate InGP → Tryptophan.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.