Crops need nutrients just like people do. A fertile soil will contain all the major nutrients for basic plant nutrition (e.g., nitrogen, phosphorus, and potassium), as well as other nutrients needed in smaller quantities (e.g., calcium, magnesium, sulfur, iron, zinc, copper, boron, molybdenum, nickel). Usually a fertile soil will also have some organic matter that improves soil structure, soil moisture retention, and also nutrient retention, and a pH between 6 and 7. Unfortunately, many soils do not have adequate levels of all the necessary plant nutrients, or conditions in the soil are unfavorable for plant uptake of certain nutrients.
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.
She discovered that folate was crucial to sperm development. <span>It has been found that folate may have been the driving force behind the evolution of darker skin, factors such as clothing and climate affect the evolution of skin pigment. </span>
First things first, I'd call this a questionnaire rather than a problem but anyways. Your DNA profile is literally your identity, and to have that stored in the medical records would be useful in some other cases besides medical issues. It is like having a copy of your fingerprint in the government's hands. Thus one may find it useful as another way to identify someone when the need occurs. As for purposes such as to be referred for the development of personal medical treatment (I believe you're referring to project CRISPR) , is not as necessary because the way they identify mutated genes or "infected" DNA or cells is by referring it to the normal DNA found in any other cells in your body, and if cells are that easy to access, they do not have the need to keep a medical record just for your DNA sequence along with all your gene codes, especially when you are performing investigations on the same species, humans, who have the same number of chromosomes with the similar genes.
The epithelial cells are always arranged in an orderly fashion on the basement membrane, but the connective tissue doesn't have a basement membrane. <span>They both help prevent foreign toxins from entering the body but the connective tissue also provides additional functions of insulation and supporting bones and muscles.</span>
