We use a dichotomous key to figure out what kinds of organisms were related to in the past. i'm not ver confident in explaining how it works so you might want to look online.
Answer:
The correct answer is a inducer(lactose) = acts by stepping on the gas pedal.
Explanation:
In lac operon lactose act as an inducer.Lactose exerts its action by binding with the repressor and inducing a conformation al change in the repressor molecule and prevent the later from binding to the operator region.
This ultimately result in the expression of the structural genes such as Lac Z ,Lac Y and Lac A.
According to the given question if the lac operon is described using a car analogy then the inducer lactose will act by stepping on the the gas pedal and this is the positive regulation of Lac operon.
Answer:
The first and most simple way is to stick your finger into the soil about an inch or so, if it is moist then your plant is well watered. If you find that your finger comes out dry then you may want to water your plants
Explanation:
The answer is A. macromolecules
There are 4 types of macromolecules; lipids, proteins, carbs and nucleic acids
